Pros:

Good Intro 
Nice use of the enivorment
Some use stuff
The Detail

Cons:

There is no navigation to the alram
More medkits
Too many tanks in the parking lots 
Incoming attack come wave by wave right by the saferoom
More ammo

Conclusion:

If your going to put so much events in one chapter give us better guns. And get better navigation for the map. Fix the tanks in the parking, cause I had to kill three of them in the parking lot.