Once you get to the unpowered level, you have to wait for the doors to be hacked while numerous bugs rush you. You can't evade them, they are too fast, and your best weapons don't take them down near fast enough, forcing unavoidable deaths.
Add to that the fact that the guy you start with is immediately sent up a lift at the start of the game. Why would you split up when you've gone in fully armed?!?
Game could have been a bit more fun without these 2 major issues.