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Level 41: O of Destruction!
Doom

Level 41: O of Destruction!

Complete Doom Level 41: O of Destruction! walkthrough. Find the Red Key, Blue Key, and Invincibility Sphere.

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Complete Doom Level 41: O of Destruction! walkthrough. Find the Red Key, Blue Key, and Invincibility Sphere.

Walkthrough
  1. 1
    Start on a circular platform with a slime pit in the center. Kill enemies on the central platform but do not attempt to get the Red Key yet.
  2. 2
    Turn right and follow the pathway to an opening on your right.
  3. 3
    Head up the stairs and kill all Imps, Cacodemons, and Arachnotrons in the room.
  4. 4
    Go up either staircase. Kill the Shotgun Guys at the top and proceed through the opening.
  5. 5
    Walk forward; an Arachnotron will appear from a revealed pillar. Kill it, collect the Plasma Gun and ammo, and then pick up the Blue Key.
  6. 6
    Leave this room and head back down the staircases to the circular platform.
  7. 7
    Take either path to the Blue Door at the other end, killing any Shotgun Guys or Heavy Weapon Dudes encountered.
  8. 8
    Open the Blue Door and go through.
  9. 9
    Turn left and follow the hall to a switch on a pillar. Kill the Heavy Weapon Dude and Cacodemon.
  10. 10
    Hit the switch and go through the opening. A bridge will rise.
  11. 11
    Cross the rising bridge to the platform opposite, collecting Health Potions on the way.
  12. 12
    At the other end, kill the Spectres and go through the opening.
  13. 13
    Hit the switch inside. Turn left and drop down to the slime pit.
  14. 14
    Get on the platform in front of you and head up the stairs. You will return to the circular platform.
  15. 15
    A bridge will have raised to the center platform. Cross this bridge to reach the Red Key. Pick it up.
  16. 16
    Turn around, head straight, and drop down to the slime pit.
  17. 17
    Open the Red Door to your left and go through it.
  18. 18
    Kill the Shotgun Guys and Heavy Weapon Dudes in front of you.
  19. 19
    Kill the Heavy Weapon Dudes behind the cage, then turn right.
  20. 20
    Walk up to the bars; they will open. To the left of where the bars were, find a hidden door in the black spot on the wall.
  21. 21
    Open the hidden door and grab the Invincibility Sphere. Leave this room.
  22. 22
    Head left and go up the stairs, killing any Shotgun Guys.
  23. 23
    At the top, hit the switch. A pillar will lower, revealing a platform to the left.
  24. 24
    To reach this platform: drop into the slime pit, head right. With your back to the Red Door, find a switch across from you. Hit it to lower a lift.
  25. 25
    Ride the lift to the top. You will be back on the circular platform.
  26. 26
    Go to where the Red Key was and turn to face the bridge.
  27. 27
    Run straight towards the platform over the slime pit to land on it.
  28. 28
    Follow the pathway to an opening and drop into the large room below.
  29. 29
    Kill the Cacodemons and go through the opening at the other end.
  30. 30
    Drop to the floor below.
  31. 31
    Kill the Arachnotron behind the bars. Follow the left wall to a lift.
  32. 32
    Lower the lift, get on it, and ride it to the top.
  33. 33
    Kill the Imp, grab the Medikits, and hit the switch. This lowers another lift below.
  34. 34
    Drop back down, go to the other end of the room, and get on the lift.
  35. 35
    Hit the switch. This lowers the bars blocking the exit switch.
  36. 36
    Drop to the floor below, go through the opening to your right, and hit the exit switch.
Tips
  • The Invincibility Sphere is hidden behind a secret door to the left of the bars after passing through the Red Door.
  • Reaching the platform over the slime pit after hitting the first switch requires a running jump.
  • Red Key
  • Blue Key
  • Plasma Gun
  • Invincibility Sphere
  • Exit

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