Pros:

awesome concept 
funny as a...
good amount of weapon stock piles 
tests your tactics 
Lot's of areas to camp out
Good amount of horde and special infect from all directions...

Cons:

some of the ladders don't respond, especially in a tight spot. more sods law than programming. 

want to be able to hear the stack....or have it turn on at 5 mins and it blasts the infected in proximity...maybe

long set up time...More petrol cans close together? 

Conclusion:

Solid survival map with enough "steak out" places to make you want that gold and beyond! Is a go to when you just want a half hour of zombie zapping too. 
What are you doing DL it!