In this area you want to strafe to your pistol as fast as possible, hold interact before reaching it to begin picking it up as soon as possible, also grab the ammo right there. Next kill the 3 bugs in the starting area and move down the hallway to the left of the starting area, kill the bugs there and pick up the ammo and health. Finally move through the office section to the radio while killing everything else in the Station. Grab the ammo and interact with the Radio and spam through the dialog. Now rush to the Captain's office holding interact when you get there and activate the computer. Grab the ammo and leave the office and before heading to the stairs grab the ammo in the room to your right after taking a couple steps. Next to the elevator there is some stairs and at the top their is a shotgun, grab it and head down. Now run around and kill everything that comes at you while missing the least amount of shots you can, while doing this grab the pistol attachment in the right hallways between the bench's. Go grab the copies of the files and clear out everything in the office section as fast as you can and leave through the elevator.