Pros:

Well Designed Level
Good Amount Of Supplies
Easy To Follow Design

Cons:

Random Explosions causing issues such as player deaths
Extensive amounts of zombie hordes
No explanation for setting
Map crashed when reached escape vehicle
Special Infected spawns were poor-behind blast doors where they had no effect on difficulty

Conclusion:

A well constructed map, but the cons outweigh the pros in my opinion. Maybe if the map was a little more balanced to give the survivors a better challenge, I'd give a better rating and a fix for the crash at the escape vehicle would certainly change my opinion