Pick up the armour shards outside the lobby and when you do kill the two imps that attack you. Pick up the armour and med kit in the corner and go through the northern door into the main lobby. When you go in the room will become bloody with skeletons all over. When this stops two imps will attack you as well as a commando zombie and a normal zombie. Go around the room to pick up shells and a med kit. Crouch near the desk and press a red button to open up a hatch with more ammo in it. Go through the northwest door into the most disgusting, graphic, room in the game (the bathroom). Kill the fat zombie, pick up the nearby ammo, and go back to the lobby. Kill the two imps. Go into the lift and ride it up and kill the commando zombie that runs at you. Pick up the machinegun ammo and continue. By now a wall has opened and an imp has come out. Kill it and then go to the records office.

Two zombies come near when you enter the room. When you go farther into the level two commando zombies will attack you, front and back). In one cubical there is ammo and a PDA. Listen to the audio log on the PDA about the teleportation experiments. Kill the last zombie in the northeast corner. Use the code 538 on the cabinet then kill the two zombies that open a door. Then continue to the office hallway. Listen to Betruger as you pick up ammo from the dead solder and continue to the next door. In the northern end of this hallway you will need to kill two chain gun zombies and a revenant. Pick up the ammo belts and go through the northern door into the teleporter control lab. Pick up the med kit near the entrance and continue down the hallway. Go left at the T intersection and get the shells as you go. Go through the north east door and talk to McCormick. He tells you to bring him the plasma inducer. Use the health station in the corner and backtrack to the central corridor. Kill the chain gun zombie that comes out of the eastern door. Go into that door.

You will see a zombie eating a fat zombie (hmmm....should be the other way around). Kill them both and the other zombie that come out of his hiding spot. Go through the north-eastern door into the bio labs lobby. When you get into the main room a zombie will walk towards you. Get the clip from the desk and then go through the south-eastern door to examination room d2-1. Kill the fat zombie on the other side and move down the hallway. When you go into the examination room a zombie walks towards you. After you kill him go int the next room to lure three zombies towards you. Now go to delta junction 2. After the second corner in the junction be ready to kill the imp in front of you and the other behind you near the entrance. Proceed to the next door. After you kill the two zombies in this room two imps spawn. When you kill them both collect the supplies around the room. Then go over to the control panel and press any button to have any box come to you. When it come to you press #6 and quickly jump on the box that moves up and from that box jump onto the small ledge leading to a vent. Turn left to get ammo and then go right and continue on. When you drop through you'll be in the security junction. Kill the two imps that attack from the southern part of the hallway.

Use the code 931 on the door with the BFG behind it. Now go to the security control room. Use the panel to turn off the security system and the cabinets code is 972. Go through the door where the halon security was and pick up the supplies. Then use the panel in the room to unlock other doors in the sector. When you do this an imp will attack you. Kill him and then go into the east lobby. Then go into the central corridor and kill the revenant and the imp that await you. When they are dead go into the western door. Blast the imp that jumps at you. Get the shells and go into delta operations.

to the left of the door is and imp. After that a commando zombie runs around the corner as well as four fat zombies. Backtrack till your going down the hallway north and you will see several offices which you can enter and get ammo from. Go up the stairs and into the storage archives. Kill the zombie in front of the entrance and then move forward and kill the imp that comes out of hiding. Two more zombies come out of the southern part of the room. In the southwest corner of the room is a med kit. Go through the southeast door killing the four zombies along the way. The plasma inducer is in the opened cabinet. The code for the other cabinet is 715. Head north out of the room and then a right into an office with ammo in it. Leave and turn right and down the hall. When you get to the waiting area there are two zombies and security armour in the eastern corner. Move the box in the elevator and ride it down and go to the west hallway again. Kill the three zombies and then on to the central corridor and kill the two commando zombies. Next go through the northern door in to the teleporter control lab and talk to McCormick. He tells you some stuff and gives you a video CD. Go into the room with the actual teleporter and activate it. It's pretty cool looking. Go in to continue to Delta Labs Sector 2B.