I like this map;
guess the game flow on it will give some pretty nice fighting action ;)

A couple of lights seem to be still missing though.
Also : there's that platform inside - the one with those 4 biotank models on it - where I get stuck on the sharp edges of the ramps coming down from above :-/
I tried making the front edge "noclip", that seems to fix that problem, without being too unrealistic during play.

Looks very interesting map. Very nicely done.

A few suggestions:

• Add more ways to go up from inner area. On most floors there is only one way to go up. From the first to second there is only one jumppad (which leads to a hole with a small too steep ramp). From the second to third, there is only a hole that requires <some-weapon>-jump. From the third to fourth (the one with biotanks) there is only one stair. It is almost impossible to go up from biotanks level. To the top level, there is one teleport and one jumppad (but both are too near to eachother).
• That staggered ramp/stair outside does not look very well. Maybe it should be a ramp, or actual steps (instead of slanted steps) with a straight handrail.
• Some light positions could be fixed/enhanced. Some textures (specially those that act as "lamps") could be changed to use those new glow-mapped textures.

In overall, a good map, with clever item positioning and nice design.