Pros:

Great maps
Easy to navigate
Cool locations like the movie theater
Nice posters and artwork 
The piano plays the Exorcist theme

Cons:

First map has only handguns
Almost no ammo on first two maps
Not very many Pipe Bombs or Molotov 
Health packs are scarce 
Very dark in some areas 
The finale was a let down 

Conclusion:

Very fun and creative campaign. The maps where great with cool places to explore like the movie theater that is playing the opening to this game on one screen and the opening to Dawn Of The Dead (2004) on another. I highly recommend playing this campaign, you wont be disappointed