MAP29: Outpost Omega (Doom 64)

MAP29: Outpost Omega is the second secret level of Doom 64. Should this level be undertaken right after MAP04: Holding Area, this is where the player will first come across Mancubi and Pain Elementals. The level also contains the first of the strange artifacts known as Demon Keys which upgrade the Unmaker, which can also be found in this level. The music for this level is the same as MAP05: Tech Center.

Secrets

 * 1) In the right control room from the starting corridor, the frame of the fourth computer panel is low enough to step on. This is a door to a hidden area which opens by touching the third computer panel in the left control room.
 * 2) The right gauges panel in the door frame to the room with four cages briefly opens a niche across that room, providing a red key; this is required to get the Demon Key later – see the additional chapter.
 * 3) Passing the room with cages of broken wire-mesh fences, where you can see the blue key from to the left, enter the corridor that leads to a switch. Halfway inside, a windowed wall lowers which has an armor inside.
 * 4) This window frame has a raised switch. Pressing it lowers the opposite window frame with a super shotgun.
 * 5) In the room behind the blue door, drop down to the left, press the computer monitor to the left, and run down further to the left to grab a supercharge while the bars are briefly gone.
 * 6) When the exit room became accessible after pressing the left switch, the right switch can be pressed now, revealing a corridor with powerups.

The Demon Key
After getting the red key, the Demon Key and the Unmaker can be obtained in the tall multi-chambered room which also houses the yellow key. You traverse the room by leaping from available platforms or dropping down levels to reach the bottom. There are teleporters at the bottom which will send you back up to start over, so you can explore as much as you need.

After obtaining the yellow key, teleport back to the start of the room and drop to the left again. There is a switch in a room to your right, guarded by an imp or hell knight. Get a bullet weapon ready and run there, passing two chasms (jumping helps a lot here, you should have completed MAP32: Hectic before). Hit the switch and a platform will temporarily lower back the way you came. Jump back to the lowered platform quickly and ride it up. This will reveal a switch on the opposite wall, next to the teleport target, which can be shot to be activated.

That switch will permanently lower a platform you jumped over twice. From there, facing the switch you pressed, the left wall is a secret that lowers when activated, revealing the Unmaker. After you have picked up the Unmaker, shoot the switch which is visible from across the Unmaker's platform. Then head back to the first shootable switch and strike it again to further permanently lower the platform, which will reveal the red key door. Behind the red key door is the first Demon Key.