Pros:

long campaign, but in a good way
original maps, really enjoyed the ballad
good balance for the difficulty/number of zombies

Cons:

invisible walls (i saw only a couple)
skybox goes crazy when lights are off, so you have to keep it on, i don't like it :D
FPS where going down when under the rain, didn't experienced it in "hard rain" for exemple
i confirm that server crash when outro begins

Conclusion:

Just played it with my friends. We loved this campaign ! As said before, few bugs to solve, but nothing really anooying. Really liked it, think we gonna play it again.

Pros:

Nice background
Liked the pathfinding

Cons:

Need more weapons !
A bit short

Conclusion:

The ammount of ammo was correct, but i've played it several times, and there was always these f***shotguns instead of having any other weapons. There was only some weapons in the last room, but we would have loved finding other ones to change during the game.
I 've put 85 but with 2 more maps and assault weapons it would worth 90

Pros:

Long
Beautiful
open spaces
tons of zombies
huuuge spaces
events

Cons:

pathfinding sometimes hard
would have like more melee weapons
On the third or fourth map we spawned outside the safe room
On some safe rooms weapons and ammo just disappeared. Seems they just spawned under the ground. We were able to get the ammo, but medkits and other weren't able to reach.

Conclusion:

This is the best custom campaign we've played with our friends on L4D2
Seems it was quite optimised, fun to play.
Some bugs to solve but they do not kill the fun and the game.
To be perfect this map needs sounds and flames for the shuttle IMAO