Finally played this map, I pretty much agree with what has already been said.
The basement section was actually the highlight for me, racing through the slime while the boots are expiring and the alarm is blazing in the background made for a pretty tense scenario!
I agree with Aleks on the terrain and the sprite bridge, they're very well made but it's a shame they're in a corner that's not really part of the gameplay area.
Enjoyed the humor in the viewscreens as well, and the idea of a semi-abandoned government building that can be fully explored was nice.
I think the theme allowed for some more dynamic lights (like lights from the outside coming through the windows, could have made for some nice sector-based lightning effects).
But the darkness did add to the abandoned atmosphere.
All in all a very solid map.