MAP22: Diminished Apparatus (Claustrophobia 1024)


Claustrophobia 1024 maps 21-30

01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 18 19 20
(21 - 30)
Secret maps: 31 32 33 34

This level occupies the map slot MAP22. For other maps which occupy this slot, see Category:MAP22.

MAP22: Diminished Apparatus is the twenty-second map of Claustrophobia 1024. It was designed by Brett Harrell (Mechadon), and uses the music track "Squar" by James Paddock (Jimmy).


Map of Diminished Apparatus, cropped to only show the playable area
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


Open the door ahead and kill the shotgun guy and zombiemen waiting behind it, then run forward to a super shotgun and use it to kill the monster that rises from the floor ahead. Press the button in the monster's alcove to lower the floor again, then open the door at the bottom to get outside and face zombies along with a mancubus (and one or two revenants on Hurt Me Plenty skill level or higher). Go up the south-east steps and turn right at the top to see a button, then press it to lower the floor and go down to a small tunnel where an imp guards another switch. Activate the switch to lower the blue keycard, kill the spectre that is released behind you then ride the lift back up and go down the steps to collect the key.

Go back to the starting point and press the blue button here to open the nearby door, then step through and take the chaingun before going down to the central nukage courtyard. Kill the spectres and other monsters here, lower the lift in the south wall to reveal a Hell knight (or baron of Hell on Ultra-Violence (UV) and Nightmare (NM)) then step past it to enter a room with a power core and two cacodemons - bars will block the exit from the room as you go inside. Press the red button on the south side of the power core and kill the cacodemon and demons/spectres that teleport in, press the button that has appeared in the north-west corner of the room to reopen the lift then step past it again to return to the courtyard, where the yellow keycard has lowered.

Go back to the blue key area, where more zombies and another mancubus have appeared, then go up the steps and press the orange button directly in front of you to open the door next to it. Kill the zombies in the next room then go down the steps on your right, pass a knight (or baron on UV and NM) then step through a nukage-fall to reach the enclosed east side of the courtyard, which holds various items including a berserk pack. Pressing the button behind the berserk will close off the south entrances to the courtyard, drop the dividing pillars to reveal a supercharge and rocket launcher, then cause an arachnotron and a pack of small monsters to start teleporting in - you must hold them off while you wait for the red panel inside the east column to descend and reveal the red keycard.

Once the red key becomes available, pick it up then head back round to the south-east corner of the level and press the red button on the south wall, which will open the walls on either side to reveal two spectres and a cacodemon (or pain elemental on UV and NM) along with a bronze switch. Flip the switch to open some metal bars to the west, go past them then head round the corner to another door and open it to confront a revenant. Go round the next corner to kill a zombie, press the red button behind to open the way forward then follow the passage past some zombies to reach three buttons. Press them to reveal three more buttons and press those as well, which will open two chambers near the center of the map, one near the last door you walked through and one east of the starting point. To get to the chambers you will need to use the lift that goes down to the courtyard, but watch out for one or two arch-viles that have teleported in and started resurrecting monsters. Press the buttons inside both chambers, which will open the silver pillars blocking the exit room, then go back to the south-west corner and enter the exit room to see eight small switches. Six of the switches end the level, while two of them can be used to trigger the Easter egg described below.

Other points of interest[edit]

The exit "switch" is actually made up of six switches that exit the level, and two that do other things. The first switch on the left and the third switch on the right (which are indicated by pulsing lights) activate the level's Easter egg. Press these two switches and then go back to the area behind the yellow door. Move towards the two red doors at the opposite end of the room, and you should see a small new inlet with a strange fleshy texture inside having opened up on the left-hand side of the switch behind the doors. Inside this inlet is another switch. Pressing it will cause three panels with a bizarre texture on them and the caption "Long Live Lazy" to appear around the level.


  1. In the first corridor, stand on the grey panel (with a super shotgun on it) in front of the first door, and press the use key against the letters 'C' 'U' and 'A' on the wall in front of it, pressing each one after the other as quickly as possible. If this is done correctly, the letters will disappear, and bars in the central nukage courtyard will open, revealing a supercharge, a computer area map, an energy cell pack and ten backpacks. (sector 401)
  2. After getting the red key and hitting the red switch, a tiny stair will raise on the left-hand side of the red key pillar, leading up to the brown walkway. Walk around the pillar (this is difficult to do, try and "hug" the pillar as you walk around it) and past the floor lamp. Stand on the edge of the walkway. (sector 709)
  3. After finding the previous secret, face the opposite end of the pillar. You should just about be able to see a switch behind the sewage fall inside the inlet you're facing. Shoot it and a BFG9000 will appear behind the multicolored bars in the starting corridor. (sector 670)
  4. Past the yellow door there is a set of red bars that can be raised by hitting a red switch. In the area behind this there is a small panel in the wall darker than the surrounding walls, opposite the stairs. Press the use key on it to expose a blue switch. Press this switch and this will expose another switch to the left of the red key pillar. Shoot this switch and a megasphere will appear in the room opposite (you'll be able to see it through a wire grating). (sector 689)


Demo files[edit]

Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

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

Run Time Player Date File Notes
UV speed
NM speed
UV max 4:48.86 Tatsuya Ito (Tatsurd-cacocaco) 2009-06-27
NM 100S
UV -fast
UV -respawn
UV Tyson 14:44.31 j4rio 2019-07-07
UV pacifist

The data was last verified in its entirety on December 21, 2021.


Map data[edit]

Things 494
Vertices 4959*
Linedefs 4906
Sidedefs 8079
Sectors 736
* The vertex count without the effect of node building is 4121.


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

Technical information[edit]

Inspiration and development[edit]


The bizarre texture on the three panels that are made visible by activating the Easter egg (see Other points of interest) is a heavily edited image of Girg Jatsand, an image popularized by the Jetsons. The caption "Long Live Lazy" is a reference to "Lazyadon", Brett Harrell (Mechadon)'s other "nickname".

See also[edit]


External links[edit]