MAP22: The Escape (Memento Mori)

MAP22: The Escape is the twenty-second level of Memento Mori. It was designed by Denis Möller and uses the music track "Triangle of Fear" by Mark Klem. It features a similar situation to the spider mastermind / cyberdemon duel from Doom II's MAP20: Gotcha!, where the player must trick two spider masterminds into fighting each other.

Essentials
Start and Red key

You begin in a hallway. Go up the staircase immediately to your left, killing the former humans. Flip the switch at the end, then return to the hallway. This switch has raised the bars at the other end of the hallway, so continue across the bridge into a maze-like area. Follow the maze around clockwise, being wary of a spectre ambush from behind about one third of the way in. At the end of the maze is an alcove with a Hell knight and a switch. Dispatch the Hell knight, prepare your preferred weapon against demon hordes and press the switch.

The walls of the maze will lower, revealing up to ten demons coming at you from all directions. Take them all out, heal up and flip the switch in the northeast corner. This reveals a large cage full of imps in the eastern wall of the room, as well as a door in the west wall. A few well-placed rocket launcher shots will solve the problem. Head through the western door, equip your chaingun or plasma gun and ride the platform down to a nukage-filled area. You will immediately be set upon by a pack of imps. Kill them, run forward and activate the switch in front of you.

Ride the platform back up. A trap has opened in the southwest corner, with up to two cacodemons. Once they are done for, go up the staircase and open the metal panel ahead to gain access to the imp cage. Open the door in the east wall and prepare for the level's set-piece battle.

The room is at first empty but for a soulsphere (Hey, not too rough and below), two medikits (Hurt me plenty) or one medikit (Ultra-Violence and above). Approach closer and the door behind you will shut while the walls on either side open, revealing a spiderdemon on either side. To survive this encounter, you have to first put yourself in the line of fire. The two spiderdemons will hit each other and infight, blowing each other up. Finish off the surviving spiderdemon if needed. Once both of them are dead, run over to the northern platform and flip the switch, then run over to the southern platform to grab the red key.

Yellow key

Drop into either slime channel in the spiderdemon room and open the door at its eastern end and ride the lift up. Open the door with the silver markings to enter a large empty room. The yellow and blue doors are on a ledge that you cannot reach, so head for the switch in the southwest corner. Kill the Hell knight (Hey, not too rough and below) or baron of Hell (Hurt me plenty and above) in the corner and flip it.

This lowers you into a tunnel. Notice a bright rock alcove to your left. An imp will approach you - when you shoot it, a teleport trap activates, teleporting up to ten imps and five chaingunners into the alcove, one at a time. Simply pull out your chaingun or plasma gun and "camp" the alcove until they're all dead.

Continue down the corridor to a door and a switch. Flip the switch to raise a bridge across the starting hallway, then go through the door to a red door. Open the red door, kill the shotgun guys waiting in ambush, then flip the switch on the east wall to ride the lift down. Run across the nukage to the platform with the yellow door (be careful of the many imps in the main pool), turn left and follow the corridor all the way around to a door.

Go through the door to a walkway overlooking the yellow key. Flip the switch at the end of the walkway to raise an invisible barrier, then drop down to the floor ahead. Go to the southwest corner, where there are two switches. Flip the blue (south) one first to raise the bridge to full height, then the red (west) one to lower the bridge like a lift. Run onto the bridge before it rises.

When you are about to collect the yellow key, equip the rocket launcher and face backwards (east) before stepping onto its pedestal. A trap will open with up to five chaingunners and four shotgun guys, who you can get the jump on instead of vice versa.

Blue key

Backtrack all the way to the yellow door. As you leave the yellow key walkway, stay close to the side of the corridor with the brown windows. This allows you to avoid a drop trap near the door.

As you open the yellow door, you will be set upon by up to two revenants, which should not be too much of a problem. Step through the silver teleporter.

You are now on the ledge in the room after the spiderdemon room, next to a yellow door. A small platform has also risen up to allow access to this part of the ledge from the ground floor. Go through this yellow door and go down the stairs to a grey room. This next room is filled with traps:


 * Clear out the shotgun guys behind the cage above.
 * Flip the switch. A wall to the right lowers, revealing up to two demons. A wall in the cage also lowers and fills the cage with chaingunners.
 * Walk into the trap where the demons came from. A wall in the east will open with a switch.
 * Flip this newly revealed switch. The wall ahead will lower, revealing up to five demons; another trap in the south wall will also be revealed, with a Hell knight inside.
 * Go into the Hell knight's trap and flip the switch.

Go back up to the staircase. This time, climb it all the way to the top. You are now in the cage-like area where the shotgun guys and chaingunners were earlier, and a new room with four teleporter pads has opened- three in a line and one partially hidden in a far corner. Each of them will take you to a similar sewer-like area, where you clear out enemies, flip a switch and ride an elevator to the outdoor area with the blue key. After use, each teleporter rises up, preventing anyone else from using it. However, out of the four areas, two lower one of the two sets of bars protecting the blue key and two lower the other sets of bars. The closest teleporter to the entrance and the one in the far corner belong to one set, and the other two teleporters to the other. On single player, there is an extra teleporter in the blue key area for you to go back and use another teleporter of the four. This teleporter is closed in co-op mode. While 3 and 4 player co-op guarantees that at least one pair of players will use one of either set of teleports, On two player co-op, make sure that each player uses one of each set of teleporters - if both of you use two in the same set, you will be stuck.

Once the bars are lowered, flip the switch in front of the blue key three times. This lowers the blue key, removes an invisible barrier and lowers a nearby teleporter so that you can exit. Unfortunately, this also triggers a dangerous teleport trap, With up to eight shotgun guys and six chaingunners teleporting into three different locations in this tight space, cover is at a premium. Using the switch pedestal as cover is strongly recommended.

Exit

Step into the white teleporter. You are now on the other half of the ledge with the blue door. As you approach the blue door, immediately turn around for a chaingunner trap behind you. Go through the door, kill the Hell knight ahead and follow the platform to a wooden door in the north. Destroy the barrel ahead and flip the switch behind it.

With that done, drop down into the lower part of this room. Head for the southwest part of the room. As you walk past a pillar with skulls on it, a door in the south will open. Step into the pool of water beyond the doorway to end the level.

Secrets

 * 1) After the two spider masterminds are dead, run onto the (northern) switch platform, and open the eastern wall with bloodstains on it to find a berserk pack (sector 131).
 * 2) After the two spider masterminds are dead, run onto the (southern) red skull key platform and open the western wall with bloodstains on it to find an armor bonus. Take the elevator down, and then lower the next elevator (sector 324) to acquire a green armor.
 * 3) Walk onto the bridge to the yellow skull key from the south. A chunk of the wall will raise on the walkway near the door. When walking across the space it was on, the floor under your feet will be lowered to a compartment containing a group of imps, two sets of shells and a stimpack. Kill the imps, push the switch to call the elevator and ride it up again. Hugging the southern wall, walk to the east to lower the elevator again and to reveal a switch to your right. Flip the newly-revealed switch, and drop down the elevator. Enter the additional elevator that has been lowered, ride it, and open the metal door to enter a cage (sector 260) containing a soul sphere.
 * 4) In the room with the four teleporters in the north of the map, shoot the monitors to open a compartment containing three sets of shells, a stimpack and an arachnotron. Kill the arachnotron and then open the wall with the triangle upon it to find a hidden corridor (sector 461) followed by a section of nukage, containing a megasphere. Go further down the corridor to reenter the sewage area.

Bugs

 * There are two sets of shells (things 160 and 161) in the compartment where players #2 and #4 spawn. The bars (sectors 4 and 7) blocking the entrance to the compartment can only be opened (Linedefs 20 and 21, Type 112 - S1 Door Open Stay (fast); Tag 74) from inside. Thus, the shells are not collectible in single-player mode, but are not flagged as multiplayer only.
 * Spending all the single-use teleporters to the blue key, then not picking it up, makes it possible to softlock the map by taking the red teleporter or dropping down from the ledge after taking the white teleporter.
 * Some shells (thing 404) are unreachable because they're just barely resting on an upper ledge.

Routes and tricks
If you edge very slowly toward it, you can grab the yellow skull key without triggering the chaingunner trap behind you.

Current Compet-n records
The Compet-n records for the map are:

The data was last verified in its entirety on July 4, 2020.

Current DSDA records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on October 24, 2022.

Player spawns
This level contains six spawn points:
 * 1) facing north. (thing 457)
 * 2) facing south-west. (thing 458)
 * 3) facing south. (thing 459)
 * 4) facing west. (thing 460)
 * 5) facing east. (thing 461)
 * 6) facing south-east. (thing 462)

Things
This level contains the following numbers of things per skill level: