Pros:

Familiar locations
Good pacing
Plentiful supplies

Cons:

Buggy mob spawns
Too many specials at a time (possibly due to above?)
Poor difficulty scaling - alarm section
Cramped finale area with 3 tanks

Conclusion:

Getting charged off a narrow beam while being chased by hordes of hordes is not fun. Trying to kill 3 tanks at the same time in a small area is not fun. I could have overlooked these were it not for the continually messed up mob spawns - not only did they look stupid, it made some parts more challenging than they should have been.

The look of the map is great, but it really needs some help with regards to the mob spawns and difficulty scaling. I wouldn't play it again, and I wouldn't recommend it for anything other than site-seeing on easy difficulty.