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Level 12: Deimos Lab
Doom

Level 12: Deimos Lab

Follow this comprehensive walkthrough for Doom's Level 12, Deimos Lab. Find the Blue Key, Yellow Key, Plasma Gun, and Soulsphere to complete the level.

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Follow this comprehensive walkthrough for Doom's Level 12, Deimos Lab. Find the Blue Key, Yellow Key, Plasma Gun, and Soulsphere to complete the level.

Walkthrough
  1. 1
    Start the level by opening the flashing wall to your right.
  2. 2
    In the small room, grab the health and ammo in the back left, then exit.
  3. 3
    Go through the teleporter to your right.
  4. 4
    Ignore the Imps and go through the opening to your left.
  5. 5
    Head straight until you reach a wall, killing any Imps.
  6. 6
    Turn right, follow the hallway to a door, skipping any openings and killing Imps.
  7. 7
    Open the door and go through.
  8. 8
    Kill the Demon/Baron of Hell, then hit the switch on the left to lower the lift.
  9. 9
    Ride the lift to the top and grab the Blue Key.
  10. 10
    Drop back down and leave the room.
  11. 11
    Head straight in the hall and go through the opening in front of you.
  12. 12
    Head straight, open the Blue Door across from you, and go through.
  13. 13
    Follow the hallway to the Yellow Door. Turn left to see a door on a building.
  14. 14
    Go behind the building to another door, open it, and go through.
  15. 15
    Get the Yellow Key. Kill the Shotgun Guys and Demons that appear from the opening to your right.
  16. 16
    Hit the switch to open the door to leave the building.
  17. 17
    Open the Yellow Door to your left and go through.
  18. 18
    Follow the left wall to an opening, skip it, and fall into the pit to its right.
  19. 19
    Press Circle on all walls until a hidden door opens, then go through.
  20. 20
    Grab the Plasma Gun and head into the teleporter to your left.
  21. 21
    Kill the Demon in front of you and go through the opening.
  22. 22
    Go through the teleporter across from you.
  23. 23
    Turn right, kill the Demon, then head straight and fall into the lava pit.
  24. 24
    Go through the opening to your left.
  25. 25
    Hit the switch to your right and step into the teleporter.
  26. 26
    Step into the same teleporter again.
  27. 27
    Head right; a bridge will have raised in the lava pit. Cross it to the exit door.
  28. 28
    As you touch the exit door, turn around to see another bridge rising to the Soulsphere. Cross it, grab it, and return to the exit door.
  29. 29
    Open the exit door and go through.
  30. 30
    Kill the Imps and hit the exit switch.

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