Doom II: Hell on Earth/MAP06: The Crusher

Blue Key


You start in the darkened area of the level, in the center. Head forward into a larger room, where you can get the blue key.

This room has several features. A nukage river spans across the floor. To the right is a platfom with a plasma gun, and possibly four hell knights or a spiderdemon (based on difficulty). You can cause the ceiling to crush monsters by pressing the switch near the lift, and disarm the crushing ceiling by entering the platform.

If the key isn't on the platform, you will have to jump out the left side of the lift; this opens  You can flip the switch there to lower the far lift. You can approach this lift either by the ground, or through the side platform with three stimpacks; taking the stimpack route opens the doors to the monster closets, allowing them to leave instead of sniping from their position.

Past the lift is a soulsphere, and a trip back to the exit of the room.

In the large room to the west, the blue key changes location based on difficulty level:
 * On easy, it is on the platform on the right.
 * On medium, you can reach it by jumping to the left corner.
 * On hard, it is on the far lift.

Red key
Return to the starting area, and open the door on the north. Go up the lift, head straight down the corridor until you reach a room containing a staircase.

Climb the spiral staircase to the top, and grab the red key.

If you want to prevent a monster closet from opening in the previous corridor, climb the first step on the side rather than from the front.

Reaching the exit
Return to the corridor, and open the red key door on the side. Head to the other side of the room (either safely walking along the path, or simply running across a short gap) and enter the final room.

The last room is a ring surrounding a nukage pit and central building. You first need to get the yellow key in the far corner; flip the nearby switch and get the key. This will open the central area, releasing the monsters from there.

Take any teleport on the side, and flip the switch in the central chamber to raise the bridge to the yellow key door. Opening the door allows you to flip the exit switch.

Secrets

 * 1) In the starting area, a pillar to the left lowers to reveal a megasphere. (Sector 98)
 * 2) In the blue key room, jump in the nukage and head into the teleporter.  This teleporter leads just infront of the plasma gun platform. (Sector 124)
 * 3) In the red key room, jump in the north-west monster closet, and open the door on the back.  This reveals a mega sphere and a rocket launcher. (Sector 146)

Shortcuts

 * At the end of the map, you can straferun from the outer platform to the exit area.