Pros:

Amazingly detailed environments.

Varied yet cohesive.

Funny easter egg.

Short storyline that does not impede the game flow.

Terrific ending.

Cons:

Huge file size, maybe that easter egg wasn't really worth doubling the file size.

(*) Edit: electrified water is still there as a random event, cool!
	

Conclusion:

Definitely one of the best custom campaign available for L4D2. Downloading this should be a no-brainer. 

Pros:

Professional looking

No major bug or bot nav issues

Beautiful and useful use of light sources to help people know where to go.

Cons:

Nothing major, just doesn't feel like anything new or unique, except for a few spots here and there.

Conclusion:

A simple, no BS campaign that doesn't do anything revolutionary, but that does everything WELL. No extra fluff that makes bot nav impossible, no endless hordes everywhere etc. A solid effort that will probably please a wide variety of players and that will be played online for a long time. Good job. 

Pros:

-Virtual acid trip
-Becomes very unique and imaginative as you go along

Cons:

-Map 1 and 2 are ridiculously short. Join them together in a 4-map campaign, it would be more acceptable than loading 2 small levels.
-Lack of respawn closets.
-If you enter the "wrong way" area with bots, you're screwed, they shoot the non stop boomers before you can press the switch (there is a trick to collect everything without any problem however).

Conclusion:

This one get better and better as you go along. It's a kind of Portal-meets-Tron universe with some Questionable Ethics overtones in the later maps. I enjoyed maps 3 and 4 A LOT, but 1 and 2 are way too short and the finale is much too easy.

I still recommend for anyone to try it.

Pros:

- Beautiful architecture on map 2
- Generally bug free and action-packed

Cons:

- Maps are incredibly bland and flat. The vast majority do not feel like they are lived-in environment, let alone a post apocalyptic setting. 
-Flat textures on most objects. Buildings etc feel like simple box with bitmaps on it a la Doom 2
-Terrible lighting in most of the campaign. Your environments are sometimes very nice, a better lighting would make them look much better. 
- Ridiculous amount of health packs and defibs throughout the campaign.
-Last event on map 1 spawns 3 tanks which is at least 2 too many considering the amount of infected and specials coming from all over the place in such a confined area!
- Last event is way too easy. If you stay on top of the derailed train
-I don't mind another mall in a L4D2 campaign. Dead Center, Dead Before Dawn 2 and another one I can't remember of all did it well, yours isn't bad at all, but it's neither better nor even as good as those ones. 

Conclusion:

Surprisingly lackluster considering the early scores, some of which match the rating of classics like Suicide Blitz 2. It isn't a bad campaign at all, but its just too flat, bland and frankly boring as it is. You could DEFINITELY turn it around with some modifications and re-tweaking. 
Certainly worth a try, but I wouldn't go through it a second time.

Pros:

-Extremely impressive custom GAME, more than a custom campaign
-Very faithful to the Silent Hill universe
-The custom specials and tanks are a perfect addition. I accept having to turn off my other mods to have a better gameplay experience with these more appropriate models.
-Very long gameplay.
-Ability to search desk drawers for pills was a great touch, first time I see this done in L4D2
-Newspapers that can be read

Cons:

- Each map is way too long, and some are too open ended for their own good. I understand this was your goal in creating this campaign, but it is inappropriate. This is L4D2, not Silent Hill. In Silent Hill, you have a map to guide you around that updates itself as you discover locked doors and dead ends as well as various safe points. I was charged out of the map on two different levels and that meant starting again after spending almost an hour on that level.
-I believe this will be a very interesting single player experience, but I doubt very much anyone will want to play this online once they've tried it even once. L4D2 is a fast paced shoot-em up with a humorous B -movie flavor. This is so long, so slow paced and sometimes confusing, it isn't suitable for continuous online co-op.

-In the first map, in the sewer part of the underground level. If you fall in the water, there is no ladder to get out. I found what appears to be invisible objects I was able to climb onto at a couple of spots and jump back on the ledge from. 

-In the bizarro world, the frame that surround your screen is really more annoying than anything. It feels out of place and actually take away from the otherwise creepy environment by putting a visual separation between you and the virtual world you're supposed to believe you're a part of. 
-In the store on the second map, there is a readable note on the counter but when you read it it say "ERROR"? I would add that you should try embellishing the notes in general beyond "Cult scares people" "People fear cult" "Police can't help people fearing cult". A little more backstory would be really interesting.

Conclusion:

An extremely impressive amount of work, one that will give us hours of extra gameplay for a game I initially bought at 4.99 on a steam sale! On a side note, the lack of a map or save option in L4D2 will probably make this too long and frustrating for most, and certainly not suited for online coop.

Pros:

- No major bugs, good amount of supplies.

Cons:

-Short and boring.
-Interior environments feel wrong and bland.

Conclusion:

Certainly not a terrible first effort, but not a great one either. 

Pros:

- Very professionally done.
- Imaginative and highly detailed
- Very challenging

Cons:

- Long intro that cannot be skipped.
- Confusing pathways on beginning of map one. It seems at some point that you have to go in the sewer. If you go down, there's no ladders to get back up and you have to go all the way back to come out.
-Lack of ammo in early parts
The sign next to the train takes way too long to destroy. It makes no sense having to shoot such a small box at point blank range for so long.

Conclusion:

"Fall in Death" means nothing, neither does "Less harder they fall." It isn't proper english. 
Some details need some tweaking. Overall a very solid effort.

P.S. Putting the chainsaw BEFORE the tree you have to cut down might be fun!

Pros:

- Long despite limited amount of maps
- Awesome complex interior design, very original
- Some interesting navigation paths to explore

Cons:

- Limited amount of weapons, melees and even ammo in parts, especially considering the large amount of zombies to take care of. 

-Flying car is silly and detracts from the ending's epic feel.

Conclusion:

Very cool- grows on you. Original with some high replay value.

Pros:

- Great overall map design, spawn area of map 1 is the most realistic apartment furnishing I've seen in a custom campaign

- LOTS of divergent path

- A few memorable moments

Cons:

- Short

- *BUG* If you jump on the dead guy sitting behind the desk in the building's lobby of map 1, you can get stuck there. I have to restart the campaign.

Conclusion:

Terrific little campaign. Astounding first effort. 

Pros:

- Map 3 is surprisingly excellent
- Car drive-by in map too is merciless at first, but an original touch that add some intractability.

Cons:

- Confusion pathways
- Horrible indoor design, large barren rooms
-Maps are way too long and repetitive (i.e. boring)
- Many missing object (such a half a van) and some wall textures that only show up pitch black.
-Bots will not pick up health packs /ammo/ weapons in the majority of places.
- Lack of melee weapons in early maps
- Blocked streets are designed to look like normal open street until you reach a spot were you're blocked by an invisible wall.
- Zombies spawn and sometimes RE-spawn right in your face, both indoors and outdoors.

Conclusion:

Highly mediocre L4D1 campaign that suffers a few extra bugs in its unnecessary transition to L4D2. I would give this a 2.0 were it not for the superior third map which at least gave me some bangs for my bandwith-bucks. 

Pros:

- Breakable jail cells (great idea)
- Pleasant graphically.
- No crashes.
- Smooth run 'n' gun romp.

Cons:

GENERAL

- Bots will not pick up guns or health packs unless I pushed them physically right next to it, and even then some didn't.
- 1 Katana per map and no other melee weapons. Need more variety. 
- Every map feels the same. Bland.

MAP 1

- Sewer entrance MUST have a ladder going back up. We dropped in and a tank spawned in the tunnel mouth, blocking us without any mean of escape.
- Lack of weapons and supplies. First safe room is empty and you don't come across a lot of guns or ammo pile on your way.

MAP 2

- Invisible pipe ladder to make your way up in the sewer. I thought I was lost until I tried to climb the wall and succeed. The second pipe IS visible however to climb to the surface.

- Too many doors in the train tunnel area. It ends up looking unrealistic.
- Not a single health item anywhere before the safe room.
- Checked pink wall near the safe room (under one of the two AC units)

MAP 3

- Bots pick up guns but not health packs.
- "Here they come!" horde event for no reason as I entered the bunker area. Then, same thing as I get out ...
- In area where there is a cabin with guns and ammo, as I navigated up and down the side hills, zombies kept re-spawning below around the said cabin. 
- Missing poster or sign texture on a wall.
- Bots won't pick up guns or ammo in underground bunker area.
- Bots teleport ahead of me passed the triple gate event.

MAP 4

- No ammo pile after the safe room.
- Missing on texture again on metal fence
- Once you all jump on the train, you teleport to the safe room as the success music plays.
- Finale is too easy.

Conclusion:

Not the worst, but too bland to have any replay value. 

Pros:

- Atmospheric as hell
- Action pack and unique
- Has a very unique distinctiveness and very high replay value.

Cons:

- None for me.

Conclusion:

One of the most regularly hosted and played custom campaign for L4D2. High fun factor, fast paced, it's great to see an update come out today (3.42)!

Pros:

- Fun map layout
- Graphically pleasing

Cons:

- Crashed once.
- Too short.
- Finale is too easy (did not see any differences).
-  *New bug in 2.0 * in finale, a bot will jump on a pile of wood pallets near the dock and freeze there. Even if rescue vehicle arrives, he will not get off unless a tank or special pulls/push him off.

Conclusion:

I had fun playing this, but overall I feel that it doesn't have anything special or memorable that would made me play through it again. Also, searching the buildings of the first 2 maps is kinda of disappointing since there is nothing/almost nothing to find inside.

Not a bad effort. (v. 2.0)

Pros:

- Superlative production design, many breathtaking areas
- Very original
- Creepy custom sound effects
- Alterate paths, missions, keep the gameplay interesting

Cons:

- Major performance issues, especially on indoor hordes for me. 
- The game crashed twice for me while explosions would occur. I got fed up and didn't try the last map yet.
- Floating items on 2nd saferoom
- Weird world reflection in water on second level
- Perfect looking gun turret that could not be used in sewer level, map 3. Bug or not? It should either be usable or looked messed up.
- Did not hear any custom music (as in, no music at all).

Conclusion:

The performance issues prevented from really enjoying your campaign. I'm still giving it a 6.5 for how impressive and promising it looks. If you can tweak it for better and more stable performance, iron a few of the bugs out, this will be a 9.x for me for sure. 
One of the three best-looking campaign with Back to School and Yama. 

Pros:

- Excellent, unique, original, professional grade levels.

- HARD finale!

Cons:

- Not enough level 2 weapons after the first map until the last one.

- Bots cannot follow you in some areas. This makes the finale almost impossible on single player as they don't go on certain ladders. 

Conclusion:

VERY very impressive. A few navigation bug fixes for the bots and a couple of lvl 2 weapons in the second and third saferoom would raise the score even higher. Still highly recommended as it is.

Pros:

- EXCELLENT finale
- Intense throughout

Cons:

- A bit short
- Lack of ammo after the final saferoom
- Too many witches on map 1,got an early tank amidst 4 witches and charger after playing for less than a minute!

Conclusion:

Thoroughly enjoyable.

Pros:

- Lengthy!

- Very polished, looks professional.

- LOTS of divergent paths and explorable areas.

Cons:

- I had transparent walls in the second building of map 1, just after crossing over from the original spawn point.

- Map 6, after exiting the safe house, you reach a cliff with a boat facing a a mountain ridge. I don't know if there's supposed to be a waterfall there, but I have a path of missing textures from top of mountain to river below. 

- Map 7, no ammo dump (that I could find) at the platform, had to run back to the police car outside the gate.

- No voice on the phone at the end.

Conclusion:

Certainly one of the best custom campaign for L4D 1, keeping the old flame alive.

Pros:

- Epic maps. Very creative, professional-looking for the most part.

- Lots of areas to explore.

- Hard!

Cons:

 - Bots are utterly useless. Will not follow you in certain critical areas (especially in the finale, which is virtually unplayable in single player because of this). They will not take weapons or supplies unless you drop it yourself (such as when you switch weapons).

- Invisible barricade near crane event of map 2.

- A tad short (4 maps would have been perfect).

- Map 3 doesn't look as polished graphically as the first two.

- No information given. What was the original title? Will the bugs ever be addressed?

Conclusion:

I had forgotten about this little L4D 1 gem. I hope the bugs can be ironed out. It certainly is a very good addon campaign. 

Pros:

Long and action packed
Nice nice street scenery

Cons:

Very confusing navigation. In map one, arrows actually point the wrong way. The map's length compounds this problem by making it frustrating in some parts.

Interior design (including sewers) are often too large and/or too barren.

Bots refuse to take weapons or ammo.

Lack of anything unique or memorable that would make this campaign stand out. 

Conclusion:

Not terrible, but lacks polish, focus and better nav. 

Pros:

-Amazingly different feel than a daylight run through!

-From the VERY moody early dusk to the crickets waiting for you on the dark streets, this is what L4D ought to be.

-The gas tank explosion after the cola event (4th screenshot) is really impressive.

Cons:

-The campaign's name is silly and not representative of anything in-game.

-Exactly the same layout as Dead Center. No real problem there, but even a few minor surprises would have been fun.

Conclusion:

Please note: this is a review of the experience you get when playing this vs the default daylight version. Since Sir Loconator III did not create the campaign itself, my score for this is solely for the general enjoyability of Dead Center at night.

Pros:

Action pack
No major bugs found.

Cons:

Strange, disjointed and highly unrealistic map layout 

Most areas are too large and unrealistically furnished, all interiors are amateurish.

Overall lack of weaponry.

Conclusion:

The action rarely stops yet the whole campaign feels dull and lack focus. 

Pros:

Long, amazing campaign
Original, unlike any other custom campaign
Very professional 

Cons:

None

Conclusion:

One of the very best custom campaign, will effectively add tons of hours to your L4D 2 game. Highly recommended. 

Pros:

-Exciting and varied
-Multiple rush events that brings you to the edge of your seat.
-Very professional-looking
-One of the best finale with Suicide Blitz 2

Cons:

- None

Conclusion:

This has been one of my favorite campaign ever since I purchase the game. I remember the first time I made it to the ambulance, only to realize I had to double back against the horde again!
It is by far one of the most exciting and popular campaign around.

@ WeaponofChoi1ce, after playing this dozens of time i never encountered your problem if passing through the ground anywhere. As for the finale, it's a straight run on a road, then a run back, how is that confusing? Maybe you're thinking of a different map, not the finale, or a different campaign? 

Pros:

-Custom textures and gun animations are awesome, please don't remove them!
-The level of detail in the environments in uncanny
-Some places (ex the transition from woods to city, the cascading water in the stairs in the school) are freakin impressive.
-Truck re-supplying ride!
-Scary, gloomy atmosphere of L4D1
-Unlike too many custom campaign, the rooms sizes and their content are logical and feel right.

Cons:

-Had a missing texture inside the movie theatre.
-The gas can for the truck ride needs to respawn if shot. Don't make them glow, it's more fun having to look for them (I hope they are placed randomly!)
-Finale is interesting but too easy. Two tanks would be better for the second wave than a single one. Also, maybe endless hordes in between while you search for the containers.

Conclusion:

WOW. 1.0? It's already so polished and impressive, it might as well be released as Left 4 Dead 3!

Suicide blitz has it's Portal 2 easter egg and amazing crescendo run in it's last map, but overall, your campaign is superior in everything except the finale. If you could tweak the end to make it more exciting and relentless, this would get an 11/10.

All in all, this is a new gold standard in user-created content. I can't recommend this enough to everyone. 

Pros:

*Wow, so crazy! Never tried this guy's maps before, they are insanely different.
*Challenging, but in a good way
*Firebird, spaceworm, flying saucers, space jockeys with machine guns, giant skulls shooting lasers at me... did someone claim this was boring and repetitive?!
Gnome access hidden weaponry (second one is hard to get to though without holding the gnome non stop).
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Cons:

* No respawn closets anywhere. Perhaps add one somewhere in the middle platform on your way up?

Conclusion:

I didn't know someone could do something like this for L4D2, amazing.

People complain its too hard, it must be on expert for sure, i tried on normal and it was just fine. It would be possible on advanced too. Most of the people I played with were just running to the worst place ever campaign under the tower with 1000's of infected raining down on them etc. I guess some people just don't get the feel for how to tackle each challenge.

Pros:

* I never played HL2, its amazing to see what the maps look like, makes me want to play the original!
_____________________________________________

Cons:

* This is way too short. Every map is like a minute long but with tons of witches and tank that will make you take 2 to 5 minute to get through. The file size is humongous and by reading the comments I can understand why. But as the dev you have to ask yourself is it a good idea to offer approx. 15min of gameplay?

* Visual glitches already reported.

* Finale is actually  easy if you know where to stand. Just man the turret gun and shoot at everything. 

Conclusion:

Cool concept, but it makes no sense in its current state. This is the biggest campaign I think to download and is shorter than some single maps.

My recommendation would be : get rid of many extra textures and items from the maps and replace them with L4D default ones to lower the file size. Then, connect everything into 1 single map and open alternate navigation routes from the original, which would be cool for those who played hl2. If you do that, I think it could become one of the most interesting maps on the site.