I'm playing it right now...thoughts as I go. First I'm just running around a bit by myself...
-The whole thing maybe feels a *bit* cramped. I certainly don't expect you to expand the map, but maybe something to keep in mind for next time?
-Not sure if I'm crazy about these ramps:

The glass seems a bit out of place--it's fine for the windows in various places, but seems weird as ramps...also, is the ledge I'm on just for lurking? It's a little awkward to get up there, so it maybe seems weird to have nothing there...?
-love the hypo placement
-you can get stuck behind the big open crate with the health in it. If you jump up on top and then fall behind it, you're fucked.
-jumppad from RL up to YA...maybe make the left-hand side of that a little different somehow, as a visual cue that you're going to go left at the top?
-move the jumppad trigger here:

closer to the wall. You can jump and miss the trigger if you're pushing into the wall (I'm just standing there in that shot), and then have to back up before you go up.
-Wow. RG in a dead-end, only reachable underwater...I dunno about that. That's pretty brutal. If someone knows you're in there, you're pretty much hosed. I would really rethink this bit. Maybe make *some* other way out, even if it's awkward? Maybe hop up some crates and up through a hole near the YA directly above? Something like that? If you don't want someone to drop down, just make a one-way force field out of patch mesh...
-Love the PG area and the shallow water on the floor--that's always a nice audio cue...
-I found lots of places where I would get hung up on wall geometry if I was hugging the wall--you should clip that stuff smooth...
-Played with bots for a bit (and had fun!)--they seem to have some confusion around the health in the crate--I noticed at least one of them going backward and forward there--like they wanted the health but had trouble getting to it. Maybe some clipping is necessary there?
-I really like the vertical elements in this map--lots of level-over-level and death from above and below; that's always good.
-The green roof tiles that you can jump up next to from LG seem maybe a bit out of place with the theme. Sort of gothic rather than tech-y.
Hope this helps. Some good stuff here...