A compartment will open in the northeast of the room, containing an armor (which can be useful in next level) and two stimpacks ( sector 41). In the blue room at the north of the level, flip the switch on the right.
Flip the switch inside to complete the level. On the right side of the room is the exit. Continue down the path until you see a room with health bonuses, then turn left. In front of you are four Zombiemen looking back from you (be careful on higher difficulties as even a punch will alert more Zombiemen in the hallway).