Pros:

-A very lengthy campaign 
-Tons of humorous moments
-Huge maps
-Actually, it's a spooky campaign
-Loads of interaction

Cons:

-The north door at stage 3 was frustrating, the zombies kept coming in, tons at a time, took about 3 times before the doors could shut properly.

Conclusion:

One of the best maps I've ever played, the bit that got me in tears of laughter was the zombie in the car at the first stage, and it's a bit dark in stage 3. For the interaction, The key for the gunshop was genius, but sadly, that ends up as a trap. The North entrance at the mall was a pain, but i'm sure it's only a minor. I'd reccomended to play with friends for this, it makes a great campaign an even better one, nice job.