Pros:

-Clever use of custom effects and textures
-Beautiful atmosphere
-Set in a different location other than the US
-Laborious attention to detail
-Very appealing
-Fun and challenging crescendo events
-Balanced amount of supplies and ammunition
-Realistic
-Not too difficult, but not too easy
-Professionally executed

Cons:

-The finale was a little disappointing as it was too simple for my taste (it was easy to glitch/ take a shortcut back down to the rescue)
-Few glitches and bugs (smokers can still pull me from underground, and I can still exploit the 2nd map and travel underground).

Conclusion:

I. Love. This. Campaign. Absolutely one of my favorite campaigns I have ever played. It has everything you'd want to see in a custom campaign. Heck, this campaign is professional enough to be an official campaign! And we didn't even have to wait very long for the final update! WELL DONE! I would love to see more work from you. :)

Pros:

-Original and unique
-Some appealing visual elements
-Challenging crescendo events
-Puzzling level progression
-Nice custom elements
-Half-life 2 correspondence
-Lengthy maps, though others may list that as a con
-Memorable
-SO CHALLENGING, WHICH LEFT 4 DEAD NEEDS!! LOVE THE CHALLENGE! BRING IT ON!

Cons:

-Environment and atmosphere was a little stale
-Scarce amount of supplies (Though, I  enjoyed it as it brought a unique challenge, but could be irritating at times).
-Some graphic and texture issues
-Some glitches and bugs:
 *One I can point out is a glitch with the 3rd map. Once the team dies it spawns you to the end safe house, so I never really got to experience the 3rd map fully.
-Bot navigation can be quite irritating
-The mapping seems a little rushed
-Finale is ambiguous (Though it was VERY fulfilling to complete it. However, I do recommend it to be shortened)

Conclusion:

I realize this campaign has some mixed reviews, but I personally enjoyed it. If you are looking for a basic left 4 dead campaign and just want a quick play-through, you may be disappointed with Claustrophobia. I played it with just my boyfriend on Hard Eight advanced until we beat it; which ate up a lot of our weekends. It is challenging, puzzling and unique. Of course, it may be TOO difficult at times but completing it with just my boyfriend and I and one bot was quite the fulfilling achievement, and getting through the finale was quite a troublesome obstacle to overcome. I have to give it a fair rating as I did encounter MANY problems, but it was still one of the most enjoyable campaigns I have ever experienced, not to mention THE MOST challenging. A bias rating would be about a 9.5. 

My boyfriend and I share some charitable memories because of this campaign!! Nice work. :)

Pros:

-Best puzzle/trap/maze campaign I have ever played
-Humorous!
-Very unique
-Surprising
-Various directions
-Loved the camera idea
-A lot of replay value
-Intriguing
-Great finale

Cons:

-Very tricky and slightly frustrating the first few tries
-Too dark in some areas
-Not enough respawn areas
-Bots are nearly useless

Conclusion:

 When it's unique, humorous, fun, and original, it is easily the best parkour campaign I've ever played for Left 4 Dead. With it's unique game-play and bewildering puzzles, it is surely re-playable. I was very eager to play the finished version and I'm glad I put this on my watch-list. Definitely worth playing not only once, but several times! Well done!

Pros:

-Displays all playable mutations and is neatly categorized
-Vast diversity of various mutations
-Tremendous amounts of fun!

Cons:

-Custom mutations don't support official/best available dedicated servers (Which I'm aware is not your fault)

Conclusion:

Thanks to your convenient and brilliant mutation mod, I've had tremendous amounts of fun to no end! This is a very convenient mod for those mutation lovers! Everyone should consider giving it a try. Thanks for sharing. Fantastic work, once again! :)

Pros:

-Christmas
-Fun
-Loads of fun
-So much fun
-Too much fun
-A LOT of fun
-A great time with friends because it is very fun
-Love all of the customizations:
 *Custom models
 *Custom textures
 *Candy gives health
-Fun and exciting atmosphere
-RATS!

Cons:

-A few minor glitches and bugs
-Zoey's voice gets annoying after a while

Conclusion:

I've had SO much fun playing this campaign with my sisters and with friends, and has tons of replay value. Super fun... Did I mention it's loads of fun? I recommend this map to anyone who likes having tons of FUN.

I love ALL of your maps/campaigns and appreciate you sharing them with the community!!

Pros:

-Set outside of the USA
-Simple directions
-Visually appealing
-Nice atmosphere
-Fun and challenging crescendo events
-Keen perception for detail
-Brilliant customizations:
 *Custom textures
 *Custom sounds
 *Custom models
 *Custom enemies
 *Many other custom elements!
-Acceptable balance of supplies
-Unique, entertaining, and challenging finale
-Hunting Rifle on every map! (My preferred weapon; I also prefer T1)
-L4D 1 survivors

Cons:

-Few bugs and glitches (Nothing major)
-On the start of the second map, my secondary weapon completely vanished
-Would be nice to see a little  more upgrades, supplies and secondaries (Once I lost my secondary weapon, it took some time to find another secondary)
-Short length! (I wanted more!)

Conclusion:

One of the most entertaining, thrilling and ambitious campaigns I have ever experienced. I loved all of the customizations, especially the custom enemies and the idea of transforming the cola into molotovs. With it's brilliant customizations and concentration to detail, I am certain to play this more than once; as so many of these clever elements increases it's replay value. However, I was a little disappointed with it's short length, as I was so eager to play more! 

I am quite fascinated with this brilliant campaign and I applaud the effort you put into it! I have to give you a perfect score, because all of the pros of this campaign outweigh the cons, and it is possibly the BEST campaign I have played. WELL DONE!! You are very talented!

Pros:

-First map is beautiful
-Nice custom textures
-Warm lighting
-Cool traps
-The moving train safe house is neat
-Entertaining
-Fair amount of supplies
-L4D 1 survivors
-Bots work fine

Cons:

-Some glitches
-The last few maps lost the China-like atmosphere
-Moving train made no sense as it had no engine to operate it's movement
-Maps were a little short for my taste
-No negotiation for finale
-Glitchy, bland and crammed finale

Conclusion:

Overall a nice campaign, but with some things in need of some work, especially the inadequate finale. Though, it was entertaining and that's what it all really comes down to. ;)

Pros:

-Engaging storyline, ties in well with L4D storyline
-Various directions, but still simple enough to follow
-Visually appealing
-Beautiful atmosphere
-Dark lighting
-Fun and challenging crescendo events
-Challenging and lengthy maps
-Sufficient balance of supplies
-Keen perception for detail
-Nice use of custom textures and sounds
-Nice use of scripted sounds and events
-Fun to explore
-Challenging finale
-Fun on versus
-CANADA!!!!!
-L4D 1 survivors

Cons:

-Few glitches and bugs
-I got lost the first few times I played it

Conclusion:

Overall a very entertaining and engaging campaign. I'm not a big fan of forest/mountain/cave maps and campaigns, but you executed it well! I love the various direction possibilities, and the beautifully laid out map designs. I am Canadian, so it is nice to see a campaign set in Canada! Very well done.

Pros:

-Visually appealing
-Nice lighting
-Fun and challenging crescendo events
-Entertaining and lengthy maps
-Sufficient balance of supplies
-Nice use of custom sounds
-Nice use of scripted sounds and events
-L4D 1 survivors
-Unique and fun finale!

Cons:

-Second map crescendo event is nearly impossible on expert
-The door to proceed further during the crescendo event on the second map doesn't let you open earlier

Conclusion:

Overall a very challenging and entertaining campaign, with few flaws. Probably one of the most fun finale's I've ever experienced! Keep up the good work. :)

Pros:

-Visually appealing
-Fun and challenging crescendo events
-Challenging and lengthy maps
-Sufficient balance of supplies
-Dark atmosphere
-Nice use of custom textures and sounds
-Nice use of scripted sounds and events
-JESSY MCKINNEY!! :D <3
-L4D 1 survivors

Cons:

-Few glitches
-Boat leaves without all survivors aboard
-Few bugs and glitches
-Finale was a bit disappointing

Conclusion:

Overall a very intriguing and challenging campaign to play through. Though, the finale could have been better.  I can definitely see you put a lot of solid effort into making this. Keep up the good work! Would like to see more from you. Can't wait for your next release!

Pros:

-Almost exact replica of Silent Hill 1
- Great atmosphere
-Very lengthy, good times with friends
- Large maps, a lot to explore
-Challenging yet still achievable
- Jumpy surprises
- Good use of scripted sounds, spawns, etc.
- Fun with cheats enabled
- Very very VERY thrilling and creepy when played alone with no bots!
- The scariest campaign I have ever played

Cons:

-Sometimes TOO long for some people
- Nearly impossible on expert (but still fun!)
- Not very many  items or primary weapons
- Some servers that are compatible with the campaign are very laggy, or are modded.
-Some glitches here and there, for example: The part where you grab the key in the room on the Alternative Hospital, a hunter appears every time you grab the key.
- Not done yet for L4D 2!!

Conclusion:

A very lengthy, fun, and thrilling campaign, and it involves a lot of brain work. A great campaign to explore alone, and with friends. Recommended for those of you who enjoy a challenging, long, lengthy, thrilling campaign!

One of the best campaigns for Left 4 Dead, and I would LOVE YOU FOR ETERNITY if you made this campaign playable for Left 4 Dead 2! It would make me happy forever. :) And I'm sure many others would, too. ;)