Enter the doorway and blow away the Gunners, Gladiator, guards, and Beserkers. Pick up the Armor Shards and health and enter the next room with even more Beserkers. When you pick up the Envirosuit, some Technicians will break out from one of the pipes, After you gun them down, walk back up the ramp out to where to toxic pool prevents you from getting to the other side.
