Pros:

Great campaign.

 Lots of action.

 Realistic looking environments.

Challenging tasks along the way.

Cons:

First building you come across in the first map the doorways between each room were pitch black. You couldn't see into the next room, even when the door was open. Only happens in that one building though.

Bots sometimes won't enter saferoom in first map and tram in the 2nd.

Finale a little too quick and easy

Conclusion:

Great campaign. My only major criticism is the finale. It's a little too quick and easy. With such a large area it seems like a good environment to have the survivors running around and doing tasks related to the rescue while fending off the hordes. I saw a tank (vehicle, not zombie) up on a hoist in one of the buildings. Doing tasks to get that down and running might have been a good finale. Just a thought.

Otherwise, excellent job.

Pros:

Epic

Great levels

Lots of infected to kill (I personally killed over 2000)

Very challenging

Cons:

Could use a few extra medkits and/or pills

Could use an extra ammo pile or two

Bots sometimes don't take medkits

Conclusion:

A nice long epic campaign. It took me 3 hrs and 1 min. The bots' stupidity could be frustrating as they were always getting themselves messed up.