Pros:

Very good maps
Very well textured
Loads of hours of zombie killing fun
Invisable Jockeys make it scary when you get jumped
Witch moments make you jump

Cons:

Not many guns/ammo stashes
Very easy to get lost in the fog
Last mission very very dark
Not enough medkits/pills
Not very much info on what to do or where to go
Bots find it hard to do the most simple of tasks

Conclusion:

Excelent Campaign hours of fun with friends searching for keys and completing the puzzles, very cool that the maps change from normal to evil, apart from the few Cons it is a great campaign.