Pros:

Desert environment
Includes ALL of the L4D2 weapons
Fun and challenging

Cons:

Could be a bit more open (this is the desert, after all)
Skybox looks a bit low-res

Conclusion:

Very fun map! It would be better, however, if the fence was removed and all of the space you see zombies coming from would be accessible by players. Other than that, it was a fun and challenging survival map.