Pros:

-Higher performance.
-Long arms.
-16.7 lerp is optimal for my old system,even on realism expert.
-Logo auto-spam.
-No more frustrating blood screens.
-Working with a lot of mods.(Even with my own vocalizer.)
-Now I think this game might be for 6+(No more blood & ragdolls)
-Usefull chat lines(Can you tell how to bind my own?))
-simple & effective hud & matchscores menu.

Cons:

-Long installation(But it's not your fault)
-some usefull props are becoming invisible & player must to remember their place.They are visible only on low ranges.(It's very bad when you fight tanks & after uninstallation this will be the same.[*HELP!*])
-If installation isn't correct,player will recieve errors,will be not able to use scripts & ''No Steam Logon'' error might to crash the game.(Read-me-first! is ''helping hand'')

Conclusion:

Overwise,great mod for any gamemode.Only problem is hard & long installation & invisible props.But this problem isn't too bad.(Sorry for my English,I'm from ''MaveRland'' Russia:)P.S.:I bought L4D2 on Steam,but ''No Steam logon'' using this config can crash licensed L4D2 too.

Pros:

-number of Tanks
-Amount of supplies
-Drawned player can be teleported
-atmosphere...even on versus you feel relaxation of skybox & white floor(Dark skybox seems like the Sacrifice one,I like the Sacrifice.)
-Lighting in versus map is great.(Lamps near supplies & etc.

Cons:

-Pipe bombs are useless.(Boomer biles can blind Tanks on versus)
-Survival seems hard when you start it.(only on start)
-Rescue & Tank music play at the same time.But I saw this only on versus.
-Trying to play nightmare mutation on this map I & my friends failed.

Conclusion:

Overwise,great map for playing.There are a lot of cons in my review,but they are small & will not influence on gameplay.After Steam Pipe update,it isn't lagging at all.But I still trying to search best dedicated server & not to start my own local server.(My Comp. system is old enough.)Sorry for my English knowledge,I'm from Russia.

Pros:

-Portal design
-Witch co-op training
-Chell,BMS scientists...A lot of custom content

Cons:

-It is not finished yet.
-Missing textures with glass.(Rarely)

Conclusion:

Great map.A lot of useful tips about Witches!Good Work!

Pros:

-FPS arms.
-Facial animations,emotions.
-They can carry melee weapons as normal.
-Lobby,HUD & incap. icons.

Cons:

-AK-47 reload animation isn't working, but it's normal for me.
-Zoey's face looks too dark sometimes, but it's ok.

Conclusion:

Great skins of beta survivors!I hope to see them in L4D1 soon!Great Job!

Pros:

-All of L4D1 campains' history stuck in this scary paranormal place.
-Short strange  history & scary places.
-Great glyphs founding system(A.I. director?).
-Tanks,Witches & panic events are ''in-Valve style(They can scary you spawning ''near your face'' like in The Parish).
-Epic Boss fight(It isn't difficult,like HL1 final boss fight).
-Good ending.
-A lot of places to camp as special infected(Maybe this map will be great for versus?).
-Bot navigation is normal,they can teleport to you any time.(But playing single player Hunters & other incap. SI   
can make you a big problem)
-Uncommon infected make this campain harder,but not too hard.
-This map is like another great campain.
-No missing textures,all places are good looking.(Gas station destruction is still great)
-Easter eggs are making this map very intresting.

Cons:

-Map needs instuction in boss fight.(Like:''Shoot at the big ugly eye!'')

Conclusion:

This is one of the best maps I saw!I hope to see full campain made in this style.It reminds Silent Hill(the movie) & still really great co-op to play with friends.A lot of my addons works properly on this map & no bugs or horde spam.Intresting panic events(like horde of clowns or witch,screaming on the car & attracting a horde.(like Screamer?))Great Job!I hope to see more maps & campains like this.

Pros:

-TF2 & it's music
-Medic & his awesome phrases
-replaces only male Boomer sound
-Fun!

Cons:

-None.I cannot see them.

Conclusion:

Great Job!We need to find only Medic-Boomer skin & this would be awesome.

Pros:

-A lot of commands.
-Funny enough.
-Can make a real dialog with sonmeone.
-Commands are my favoirite(I hate Canada,Xbox...)

Cons:

-None.Everything working right.

Conclusion:

It's one of the best radial menu.I hope you will make L4D2 radial menu soon.It would be great to say about horses as Ellis or hate Ellis as Nick.Really Great Work!