Well done, but pretty much a similar experience to stock NM

If you are looking for a different experience (I guess the point of most custom maps), you won't find that much different here from the stock No Mercy: there are a couple of transitional spots between places that are different: the map 1 saferoom, the Burger Tank entrance to the gas station and absent lift event, and the smaller hospital roof are obvious differences.  The lighting seems to dramatically accentuate differences between light and dark, and is a little more dynamic.  There is also a subtle difference in the general look with regards to details and lighting, like this is more of a city that recently came under siege, as opposed to one that is well into the apocalypse.  But aside from the pockets that are structurally different, the changes didn't affect how the campaign felt to me very much.  No Mercy is great, which makes this one great as well by default.  But I don't think all the changes are good.  The paths and transitions from place to place in the stock map seem smoother.  The stock sewers and finale on the roof is superior in my opinion.  Since the point of this campaign is to restore the map to a beta stage, I can better appreciate the refinements in the stock one.  If you are a big fan of old, pre-release footage, and want to experience what it might have been like to have worked as an early L4D beta tester, than this download would be a great investment in time for you.  If you have not played No Mercy much, this campaign might feel fresh.  If you really want to appreciate the tiny differences between pre-release L4D and stock L4D2 No Mercy, then this is great stuff.  If you come here to experience something new, than this may not be your thing.

Not my thing

Well, I gave it a shot with an open mind.  I appreciate a few of the areas which look atmospheric with some mist, smoke and sewer waterfalls.  But they are few and far between, and connected with pipes, narrow passages, really long ladders, spiral staircases and purple lighted rooms.  It has an improvised feel to it, rather than being planned.  A few things from my experiences: the giant, circular arena with the cache of weapons in the center rarely makes for interesting game-play, nor do connecting narrow hallways and spiral staircases.  There are two places where I got stuck, and several where the bots do not know how to navigate.  The two stars are for the custom music/sound and a couple of interesting looking areas.  I appreciate the work that the author put into this, and I feel bad for giving this a 2/5, but I got to be honest.  This is not an experience that is on-par with the stock maps, nor the top-tier customs.

Competent, but not a keeper for me

The pathways are relatively intuitive and the structures look a little better than the average customs, but I felt this campaign is far from the top-tier customs and the stock maps.  It falls victim to some of the common issues that a lot of customs have: too many alarm and trigger events, too many hordes, too rapid special infected spawning, linear paths, copy and paste sections and bland areas.  For me, making hordes and SI constantly spam you is more tedious than fun, and ruins the natural pace of the game that makes it great: action, then time to breathe.  And when there is a pause (a very brief pause in the hordes), there is not many interesting details to admire.
So the campaign shows enough competence to not be a total trainwreck, but it is very far from the quality that makes it a campaign that I would return to.

Unique, lots of work went into it, but...

I imagine that this campaign might be for a select audience, because the Resident Evil movie is just not my thing, so the novelty of a campaign based on its location is lost on me.  So I will just have to judge on its playability merits, so here it is.  A lot of the architecture in the first map is really small and crowded - The streets and general area in front of the hospital seem half the size they should be, similar with the hallways and rooms.  You can't really move around smoothly, and there is a claustrophobic feel because of the small scale.  While this might be the aesthetic attempt, it doesn't add to the playability factor or the fun for me.  I liked the searching of corpses, and they were lit up nicely to find.

The second map also has some construction that made for bland gameplay for me and my friends - long straight narrow hallways tied together, and a big, square, arena like room with obstacles arranged like a grid.  Again, they might represent something that is meaningful for the fans of the movie, but I don't think that type of construction makes for interesting gameplay - at least not dynamic enough to want to revisit after the novelty wears off.

The laser trap room was clever, and there seems to be a good amount of custom content.  There is something about the lighting, though, that looks flat - like this is running on a game engine that is a couple of generations old.  It could be that there are some light fixtures in the construction that don't cast light on their surroundings, or something else, but it looks old.  I would imagine that the look could be improved with more dramatic and vibrant lighting.

Like most others, my game crashed on map 3, and by that time, I had seen enough to know that I wasn't up to revisit this campaign again.  I really appreciate the amount of work and creativity that went into this campaign, but from a playability level, it really suffers in my opinion from the small scale and claustrophobic nature of the first map, the long, straight maze of halls and grid arena in the second, and the crash in the third.  In my opinion, navigating and exploring maps is more interesting with a reasonable scale and paths to traverse, and the fun of L4D2 combat is extinguished in narrow hallways and obstacle grids.

Potential, but flawed

The detail and lighting are insane - above almost every other custom campaign you have ever seen.  The location is pretty unique.  But there are issues.  The biggest one is the performance of your computer.  I have only seen one other custom campaign reduce my computer to an unreasonable framerate - this one has some definite optimization problems.  I really liked the idea of the computer search, but it was pretty long and became frustrating.

Better than average single map, but very familiar territory

The details are good, the paths are intuitive and the pacing is fine.  This map avoids the mistake that I think a lot of other customs make: nonstop hordes, doubled SI, way too many items and too much ammo, and linear paths.  But, it is one map and the look and feel are unremarkable: it feels like I have charted this territory in a hundred other maps - the look is good, but there is nothing standout about it.  So a single map, well done, with a done-that-been-there feel.

Construction:top loaded, gets lazy. Too many items, SI, hordes.

The first two maps have a pretty unique look and feel - outdoor and mountainous.  It is a follow-the-road theme here, and while things are looking pretty good at the start, you quickly notice that there are a lot of items, ammo piles, hordes and the SI are doubled.  There is little time to enjoy the scenery, and the gameplay starts to feel tedious.

Then things go downhill.  The rest is a mashup of the Death Toll sewers, the No Mercy Sewers and the Dead Center finale, with large parts of those maps copied, pasted and weaved together.  So we have a been-there-seen-that feeling, along with the now tiring overabundance of items, hordes and SI.  This is the most well stocked apocalypse you have ever seen - among the chaos, neatly arranged stacks of ammo, weapons and items every 20 yards.

So I like the architecture in the beginning - the campaign really shines in the opening two maps.  But the more-is-better approach to hordes, SI, ammo, items, alarms and gauntlet runs makes the gameplay tiring.  It is like a movie comprised of all action scenes and no time to catch your breath.  I think the joys of L4D2 come from the pacing - some action, then some quiet.  This campaign breaks that winning formula.

I think the 3 stars are warranted because of the overall construction quality of the first two maps.  They have a professional look, and you can tell a lot of work went into them.  But the rest is a real mixed bag, and I don't feel like I have to revisit this campaign again.

Some really clever stuff here - most importantly, it is fun!

The details and build quality of this short campaign is almost spot on.  The paths and architecture is a little linear at times, but you will find some nice visuals close to the super high quality customs, and a somewhat unique look.  What makes this really shine are the custom set-pieces: reloading the artillery canon, ax to chop through barricades, crowbars to pry doors open, a narcotics lab, etc - really clever stuff.  There are a couple of dialog choices that don't add up: they are in the Florida keys, but keep talking about how cold it is, and there seems to be a lot of repetition in the dialogue that queues up, but most everything works here.   In my run, I found the supplies to be sufficient and the navigation to be intuitive and natural.  I really like this piece of work - its a keeper.

Consistently good, great in small moments, hard finale

The build quality of this campaign is well above average.  Much of it is pretty linear, like many campaigns - 90 degree paths and geometries with a few locations that are exceptions: the locations leading to the underground, and the mines themselves are nice breaks from the predictable.  But the design, pace and paths are really good quality - not quite at the level of a White Forest or Bloody Moors, but solid throughout.  The finale has a really different look, but it is a pretty long and challenging affair and starts to get a little tedious before you can finish it.  Just another case of "more must always be better" design, where at some point there is a fatigue factor that works against it.  But I think it is a keeper - almost at the same quality of the really great classics.

A classic that is nice to have back

This was a truly top-tier custom campaign, and I am really glad to have it back for L4D2.  Almost everything is spot on: the lighting, the arrows to point out the way, the destroyed and dirty city in chaos, and a unique finale location. The construction and details are close to the quality of the stock maps, and there are only a few places that don't quite look like they could be a real location.


One feature that I did not like:  you lose the sense that you are clearing a path and making progress because commons will spawn the moment you look somewhere else.  Clear a room, jump around the corner for a split second and the room will be filled again.  I think this was an unnecessary feature, and while the design might be in the service of giving you an incentive to keep driving forwards, you always have this incentive without it, and some immersion is lost.  There are already a lot of commons in the map as it is, and if a player really wants more of a challenge, expert realism will suffice for most.

Regardless, this is a definite keeper for me, and holds ranks with other greats like White Forest, Deadbeat Escape and Devil Mountain.

No Mercy, but not as good

There are a few visual issues with this map - an elevator top that disappears into the shaft ceiling at the start of the campaign, oddly thin walls and floors, and the curse of most custom campaigns: a grid layout with every path, angle and piece of architecture comprised of 90 degree angles.  There are even a few sections that seem to be lifted straight out of No Mercy.  

Another issue - the campaign seems like a series of alarm events, one after another - maybe trying to ramp up the difficulty.  The low point is the train event - not an interesting or fun place to defend.  The high mark - ascending through the construction area over conveniently stacked sacks of concrete and wood.  The lighting and atmosphere, however, are pretty solid.  But the campaign offers nothing new or interesting - compared to the stock maps, it is bad.  Compared to most custom campaigns, it is slightly above average.  Not near the cleverness or polish of the really great ones, but above the really amateur ones that clutter most of the file storage space.  It is not a keeper for me, but it wasn't a complete bore for a one-time excursion.

Great look, killed by gameplay

The visuals are a solid 5 stars: excellent lighting, creative layout at times and more details than many other campaigns combined.  But....
The gameplay is a shabby 2:  commons will spawn around you, right out of thin air.  And there are a LOT of hordes - so many that it becomes tiresome.  This is a feature that really kills the map for me - what a shame - something that could be a classic keeper.  I know a select group of players want a challenge.  I like a challenge, and expert realism gives that for me and my friends.  Maybe the players for which expert realism is not enough and want constant hordes and infinite tanks is a larger group than I think.  My intuitions tell me that the players that want a reasonable experience outnumber those that want constant hordes.  I think gameplay is about variety, and it is nice to have a moment to breathe and admire the scenery.  You have great scenery that you could admire here, but it is hard to with the more-is-better approach to the combat.

Looks great in some ways, plays mediocre, voice narrative hit and miss

This is a different looking campaign.  It has a lot of voice acting and a lose narrative, and while that in itself is unique, the act gets tiresome.  The locations are very polished and professional looking, but for many of the outdoor environments, there is something about them that makes them look and feel small, like you are on a movie set on a soundstage.  The paths and playability are about average, so it wasn't enough of a satisfying experience for me to want to replay it.

Some clever moments in an average campaign

The Keith narrative is clever in this campaign, but the pathways, construction and some of the lighting is average - not near the quality of the stock maps, nor some of the high-tier custom campaigns.  Many of the events are rehashes of ones we have seen in the stock maps without any meaning or reason, like a Midnight Runners stage show and a bell alerting a horde.  There doesn't seem to be any reason to trigger the events, and it is hard to see how doing the events helps us advance the level.  The campaign also changes your options to enable the in-game help icons and messages, which really gets in the way of the immersion.

Close to being a great little campaign

Despite a few visual flaws, this three map campaign has a professional touch.  While the first urban map is all 90 degree paths and geometry, the details and the lighting are top-notch, and the pacing makes for great playability.  I only saw one visual glitch - there is an indoor swimming pool that changes from clean to dirty water depending on what angle you look at it (or how much of the pool is visible).  Map 2 is short, but also nicely done with immersive looking areas.  The finale is also short and sweet, but I saw two problems:  there is a subtle mist in your immediate surroundings, but the other side of the river looks completely clear.  It makes for a strange visual, since even if there was no mist on the other side, our view of it would still be obscured by the mist we were in.  Also, the two story building that you can defend with the ammo is too easy of a defense spot.  Because of the fencing on the 2nd floor, commons and SI were forced to either go up the stairs and out the 2nd floor door, or over the roof.  And most SI get stuck on the roof.

Moments of inspiration

So you can tell the author put a lot of work into much of this - there are a lot of custom touches here and there, but they are chained together with bland threads that feel improvised.  The radio DJ narrative and music is a good idea, but really hurts the gameplay.  Because of the frequency of hordes, you get the long narrative or music with all the combat noise, which results in a wall of sound.  You can't hear what the DJ is saying, and you can't hear the SI sounds to be able to dial in their location (and there seems to be a lot of SI).  So unless you sit and wait at each radio for the narrative or music to end before moving on, the feature becomes a drag.  So like with many custom campaigns, I appreciate the work and love that went into this.  But the clever audio feature turns out to be the thing that makes it a place that I would not want to revisit.

Inconsistent but reasonably fun

There are places in this campaign that are nicely laid out, and others that seem unfinished and rushed.  It does not have the sheen of details and creative lighting that the top tier custom campaigns have, but it is also a little above average in general design and pathways.  The European theme isn't quite played out as much as it could (maybe if all of the zombies were smoking cigarettes).

Split personality

My rating for the first two maps: 2 stars.  They are functional, but uninspired.  You will find yourself doing nothing more than traversing a straight path and turning 90 degrees left or right every once in a while in locations that look like a million other custom campaigns.  The gas can relay is a drag, with a lot of cans and a forced chokepoint that you have to go back too more times than you might have patience for.  So there is nothing new here, and there are similar looking places done much better in many other custom campaigns.

*********************************

My rating for the last two maps: 4 stars.  In these are places that look and feel completely new.  The city, despite having a really awkward wall blocking the end of the bridge, feels like a real place, and the immersion and paths are great (except for that wall at the end of the bridge).  While there are a lot of urban maps, there is something special and unique about this one - I am not quite sure what it is.  The finale is also very unique, with a large open area to defend and a lot of space between the defensive positions and where the hordes come from.  The new look and feel of a lot of long range combat makes this stand out.  There is an awkward transition when the tanks arrive where you see where they are coming from.  I think this is unnecessary, and doesn't fit the flow, but the finale was trilling none the less.  I am not sure if I am going to keep this campaign around, but if I play it again, I will start with chapter 3.

Gets better as it goes, becomes great.

This is another campaign that I played the first chapter of, was not impressed, and put away.  After returning to it and playing it all the way through, I think it deserves a lot of respect and has a good amount of replayability.  The first chapter in the city is very linear - claustrophobic, tight streets, everything in a grid layout, back-and-forth city action that we have seen many times now in customs.  The lighting is good, but the playability and paths are very linear and there is nothing standout that separates it from 100 other maps.  The second map is an improvement - more interesting paths and more diversity between open spaces and tight.  Then it just gets even better, with a swamp level that I think is better than anything in Swamp Fever (except for its excellent finale).  So if you feel underwhelmed by the 1st chapter, ride it through and you wont be disappointed.  The lighting and details are consistently excellent, and the environments keep getting better after a linear start.

some clever ideas in an average and bland looking campain

There are some mechanics in here that are worth celebrating, like the soldiers that shoot at you.  I think this is a feature that would be really cool expanded upon in other maps.  But the design of the maps and lighting are really old looking - almost like it is from a game engine that is a full generation back.  The architecture is uninspiring, the paths linear and the lighting dull.  It doesn't have anything near the polish that many other great custom campaigns have.

Should be experienced once

This is lovingly crafted and clever - it really sells the premise that you are on a Disney ride, and pulls off the ending, which is very much like the end of an Indiana Jones movie.  I think everyone should play this campaign once.  Is it a keeper?  That I am not sure.  I really appreciate what is here, but I don't think I need to play it again.

Once dismissed, but revisited and declared great

So I brushed off this map after only playing through half of the first level and dismissed it as another run of the mill campaign using the urban assets.  I am not sure what made me want to revisit it, but I did and played it all the way through.  I really think that this campaign belongs with the best of them:  it is consistently great.
While the urban landscape has been done more than others, this offers a couple of memorable locations, like the car dealership, the docks and the brothel.  The sense of destruction is there, but not too overdone, and the right path is consistently illuminated with subtle lights.  If you have not given this campaign a try, you are missing out.  While the setting is not a new one, it offers a consistently great time all the way to the end.

Like most custom campaigns

This campaign suffers from the ills that make most custom campaigns lesser: a grid-like layout, completely linear paths where you only turn 90 degrees left or right and blocky architecture.  Having a location on a beach-front is novel, but the bland design and uninspired lighting makes it forgettable.

Good, but nothing quite new

It is a solid 3 map campaign that makes predictable use of the city and small town assets.  The paths are pretty easy to follow, with a few out of the way places to explore.  There is nothing quite unique or standout in this campaign - feels like you've done all that before, save a nice set piece in waiting for a train to go by and a few custom car models.  There is one really strange building texture next to the train sequence that makes it look like it is done in glitter, and the radio for the finale is a bit hard to find.  The worst designed place is the finale location itself - doesn't make for exciting gameplay trapped in a narrow space with a turret.  But it is a well done affair with good details and flow: it just is not a memorable or standout affair.

Good, but with faults

The lighting and detail is here, but this campaign suffers from what most custom campaigns do:
grid like mapping where ever corner, path and piece of architecture is comprised of 90 degree angles.  They just don't make for very interesting play.  The rooftop level was a highlight until you get to the 200 foot ladder down the plain chute.  Also as noted by others, there are 7 very short maps here, so the pacing is quite off.  So it kept my interest enough to play through once, but not enough to keep.  Another run through would be a drag.

Uncommonly great

So you probably know the drill with most custom maps - grid layout, 90 degree turns and architecture, nonstop gauntlets and tanks - gets stale really quick.  This is not one of those - it has great lighting, intuitive paths, reasonable difficulty, beautiful scenery and a satisfying finale.  There is nothing over done, nothing underdone.  It is a quality experience all the way through, and close to the quality of the stock maps.  Well done, and I will be enjoying this many times with my friends.

Exhausting - makes you want to abandon all gauntlet events forever

There is good quality here in the look and construction, and I know that some players and custom map builders want a good challenge.  But a map comprised of a non-stop gauntlet with endless hordes is tiring, frustrating and makes you want to swear off all maps with a gauntlet run.  In my opinion, if you want a challenge, play expert realism.  This much non-stop running and hordes is like eating nothing but cheesecake for a year.  After the first two pieces, you are done and start to feel sick.  This experience made me irritated, exhausting, frustrated and dedicated to never playing it again.
Well done with the visuals, though.

very good - unique ideas - would love an update

So there are some really cool ideas here that work:  the airplane in flight, skydiving to escape, the great wall and the ice breaking finale.  The mechanics are all there, and the campaign is a lot of fun.  Those are the most important parts, and they are very well done here.
What can be improved:
 - the parachute packs are small and hard to find (maybe because they are small)
 - the lighting can be made more dramatic and exciting, and still be realistic
 - the paths for level 2 are a bit confusing on the wall.  A bit of better directions (markers) can improve things here.
So overall, I think this is worth keeping, replaying and enjoying.  Well done.

I am glad that some people like it - I am just not one of them

So it is cool that someone spent time and dedication making this - I am sure that it was a big part of building the author's skills so they could make the competent campaign Cold Stream.  If only for that sake, this was certainly worth the effort.  On its own, however, I don't find it to be very playable.  It is much lower quality in all aspects from their later work.  So thanks for putting in the talent and hours, because I have played Cold Stream several times and enjoyed it.  But this is one that I played and quickly deleted.

A classic custom campaign - still holds up

I remember this one from several years ago, and after revisiting it with L4D2, all of the polish and pacing still holds up.  The finale is a longer one and a bit tougher than the norm, in that you have to cover a lot of ground, but the items make it reasonable and it gives the campaign a different feel.  Add this to your regular rotation if you haven't tried it yet - it is a gem.

Inventive but....

This is a really cool idea, and the construction, speed and sounds are really good.  There is a need for more polish and more creative lighting to make it feel more like a Disney ride.  For me, there isn't really replayable - you run through, admire it, then delete it.  I could imagine that with better lighting, a bit better detail and the ability to shoot and fight from the boats as well, this could make a really cool level added to the excellent Escape from Splash Mountain campaign.

very linear

I wasn't a huge fan of this one - very linear paths, mazes of obstacles, most turns 90 degrees.  Some of the layout is not intuitive: in the first map, you go where seems logical - through the park, up the bizarre treehouse, down the other side, and end back at he start.  The rock structures are really strange looking - there is this L4D cliche of unnatural barriers to keep you from certain areas to act as bounds - here all of the barriers are really obvious, and their layout is very grid like and linear.

A case of too much and too little

This is a very different campaign - a new look and in some ways, a new feel.  Some things work and some do not.  Items are generous - custom models are very very generous.  Cars everywhere at the start, all very clean, which makes for a strange look.  Same for the city -very clean, which is bizarre with all the zombies about.  I think the finale needs an overhaul - it was a bit of a drag.  But again, there was a lot of love poured into this and it shows.  I am glad that some people love it.  I don't quite like it enough to revisit, maybe if there is a new version.  In addition to a more playable finale, I would like to see more destruction in the city, more grit and less shine and more reserved items.

An unknown gem found

I don't know how I missed this map before - just ran across it with some luck, and boy, it is outstanding.  Some really great details and visuals, and something very few maps do:  you can see your eventual target far in the distance with each map leading to the finale, getting closer with each one.  Some of the locations are really beautiful, and the ammo and item frequency and placement is almost spot on.  There were three times that I came across an ammo pile on my last clip.  My only criticism:  there were a few places in natural environments where some of the earth ledges were too sharp, particularly the edges over water.  But if you have yet to try this campaign, you are missing out - it is a keeper - almost the same quality as the stock maps.

stunning and very different from everything else

Very unique look and feel to this campaign - gorgeous outdoor and underground locations, and with the exception for a few moments where it is linear or maze like, this is a campaign for the ages, and should hold ranks with the stock campaigns.

Great in small spots, good to jumbled in others

The fantastic: the start of the first map, from the church to the destroyed apartments.
Then you drop into a bizarre blue spa, which seems really out of place compared to the destruction one floor away from it.  It is immaculately clean except for a couple of blood splatters.  It was that point when this campaign went from immersive and effective to jumbled.  There are some really nice locations, like the finale, but to get there you run through a couple of cut-and-paste gauntlets ripped from stock campaigns.  So this was a mixed bag for me - some moments of brilliance and inventiveness, mixed with some really disappointing areas.  The spa and the shooting of the cannon to reveal the next passage were particular low points, and having two  stock gauntlets back-to-back was unfortunate.

Worked as a map, but didn't work for me

I am glad that people enjoy this campaign, and I appreciate the work the author put in to it.  It was not my style of map, though - the construction did not have the polish that many of the other great custom campaigns have, and the locations did not seem like real places at all to me (or even reasonable fantasy places).

Top tier custom campaign

Really great quality to the details and flow of the map.  I liked the final escape mechanics a lot, and really appreciated the intuitive paths and great pacing.  My criticisms, which are few and if addressed, might make this the greatest custom campaign of all time, are these:
- The movie theater cut the cable part was frustrating the first time, because I already had an ax and it took a long time to try the one in the room.  Could be fixed by making sure the ax does not spawn on any of the maps preceding it.  Also, it is a bit unintuitive to have the USE command do the cutting of the cable, instead of just attacking with the ax to try to chop it (which doesn't work).  Hiding the saferoom behind the screen was tricky as well.  Something more intuitive or direct could keep things from being too frustrating the first time (the difficulty level is tough as it is).
- the ride shooting out the back of the moving truck is the greatest idea that I have seen in any campaign, but the truck starts going too fast with crazy erratic turns.  There is no time to enjoy it.  It is the best idea of all time, but it misses the opportunity in execution.  Just slow it down to even the running speed of the infected, which would make for a great and fun set piece since it would last longer.
- The collection of items in the cases misses some points in realism - those cases are huge.  To keep it more grounded, maybe we could be searching for critical but small items in the cases - it take time to search, but more realistic.
- I wasn't a huge fan of the floating bars and icons to alert me of certain areas.  It takes the immersion away and may not be entirely necessary.  Also, I might of just missed it, but I was not sure as to why the front of the grocery store exploded.
Overall, though, this is a tremendous effort.  I would love to see an update.

Just about perfect

Very solid custom campaign, with some nice locations, intuitive paths and good pacing.

Original, professional and lots of fun

This is really stunning work - a real place recreated with great detail, but also a lot of fun.  I could only think of one way it could be improved - for more variety, have each chapter from one safehouse to the next cover a longer period of time from day to sunset to night - that way, we can see the park with different kinds of lighting, and the night part can make use of lots of bright and colorful lights.  Even still, this is a major achievement and a fantastic time for those that like quality maps.

Among the best

Top tier in almost every way: stock map quality, lighting, paths, pacing and some really unique locations.  I like to go back to this one regularly.  If you don't have it yet, you are missing out on a great campaign.

Among the most solid and fun

A super polished campaign with great details and some unique ideas.  Visually, it is not much different from stock and other customs, but it has a professional touch and the pacing and pathways are really good.
Update: just played it again to see if it holds up for replayability, and...it does.  This is a keeper.  Great job and thanks for putting in the hard work and creativity and sharing them with us.

Pretty good until the end.

I agree with the comment below - this was a really solid upgrade from the raw Dam It maps - a lot of the unfinished details filled in....but....the last chapter is not that fun once you get to the top of the dam.  Non stop tanks is a drag, and I did not like the sign at the end directing you to the awkward stairs and rush of SI.

Detailed but linear

Some excellent work with detail and variation from map to map, but the construction and pathways are mostly linear, like Quake 3 maps: go straight, then turn 90 degrees to the left and right.  Because of that, the well crafted details and lighting lose any sense like these are real places.  This is easiest seen in the first map: beautiful details in a city with impossibly small streets.  So it is a mixed bag for me.  The pacing is good, except for the finale which had way too many tanks.  This is a big fault with many maps - more is not always better.  You can make things challenging without endless hordes, gauntlets that run too long or nonstop tanks.  This one suffers from the latter.