I really don't want to sound like a dick, but I found several problems.
1.

You can get stuck behind this computer.
2. I think 1-4 pixel wide sectors look a bit weird (The wire in the same room)
3. I suggest replacing the Spider Mastermind with a pain elemental or even a revenant since the area seems a bit too small for it, plus I found it a little out of place (Yes, I know there was one in MAP06, but at least there was a crusher over it).
4. I think this is a clientside issue, but the doors in the middle of the map seem to glitch out (unless it's intended) and won't open for a bit.
5. This was a problem in the original, but the switch in the ground could be obscured by a wall or something since they can be activated from any height.
6. Spread the medikits & stimpacks around rather than having them in one area
7. Maybe throw in a shell box or a box of ammo in the middle of the map.
Other then that though, a neat little map.
EDIT: Nevermind about the Spider Mastermind thing. Just make it so the player doesn't have to constantly camp around the corner. Something that can maneuver better.