Pros:

-The most detailed Campaign of all time, OF ALL TIME
-Not to long but not to short
-Great NPC
-Original final
-Creepy Atmosphere

Cons:

-Got stuck on part of the Chopper in the second level
-Got lost on first level ( Could be my poor sense in direction though)

Conclusion:

The best Campaign i ever played. Detailed,Creepy and Original. Worth the download for sure!

2 Questions
-Can you make a Left4Dead2 version for those who dont have first game (Not me :) )
-WHY HASN'T VALVE HIRED YOU YET?

Pros:

-Snow man in front was a pretty cool feature
-Some infected spawned before call which game me something to do when my friends were getting ready
-Nice environment 
-Breakable gravestones

Cons:

Ai would stay at a spot and be all over map only 1 Ai followed me

Conclusion:

Great map but if you could fix the AI bug i would be happy

Pros:

Challenging

Long but not to long

Quick download

Really worth the time

Cons:

To many hunters(Everywhere i got theirs a hunter waiting to pounce me)

Tank spawn failing...Tanks spawn and get stuck in place

Conclusion:

Really good campaign just a few bugs,Weird tank spawns and WAY to many hunters overall i give it a 95/100