MAP09: Bitter Sanctuary (Claustrophobia 1024)


Claustrophobia 1024 maps 01-11

(01 - 11)
12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Secret maps: 31 32 33 34

This level occupies the map slot MAP09. For other maps which occupy this slot, see Category:MAP09.

MAP09: Bitter Sanctuary is the ninth map of Claustrophobia 1024. It was designed by Steve Muller (Kyka), and uses a MIDI rendition of the music track "Lair of the Blind Ones" from Turok 2, sequenced by Churute.


Map of Bitter Sanctuary, 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.


This map is a sequence of monster closets that open when you move into any unexplored area, until the entire level is open.

Step forward and kill the shotgun guy that is revealed, then enter its compartment to reveal two or more zombies behind you. Enter those alcoves to reveal a third compartment with another shotgun guy, then open the door behind it and push on to a switch that will lower the outer walls and reveal yet more zombies. Open the door in the north wall, then interact with a second door behind it to open the walls on either side and reveal imps. Step into either alcove to open that door and reveal another shotgun guy, then flip the switch behind it to open the south walls and reveal more imps along with another door.

Go through the door to enter a winding passage that leads to another switch, but advance slowly as you will be ambushed by imps, zombiemen and shotgun guys that are revealed around you. Flip the switch to open a control room to your left (which holds cacodemons on Hurt Me Plenty (HMP) skill level or higher), as well as a compartment to your right holding zombiemen and shotgun guys. When you enter this compartment it will open a second compartment containing imps - you can then walk south into another narrow passage to find a button that will open the walls ahead to reveal more zombies (two imps will also appear behind you on HMP or higher). Flip the switch inside the zombies' closet to lower some walls to the north-east, bringing in zombies, imps, demons and spectres.

Go into the chamber that opened when you flipped the switch, then enter the narrow passage in the south-west corner and follow it round to another switch - watch out for ambushes by shotgun guys and spectres as you move forward, as well as the south wall opening to reveal zombies and lost souls. Flip the switch and kill the imps that teleport in, then walk south-east to an open closet containing a shotgun guy and a switch. Flip that switch and kill an imp, then flip a second switch next to it to go down to a seemingly empty computer room; arm yourself before moving forward as you will be ambushed by a large number of zombiemen, shotgun guys and imps. Push both buttons in the south-west corner to lower a teleporter (which holds a revenant on HMP or higher), kill one or two Hell knights while you wait then use the teleporter to go back to the control room - the computer terminal in the north-west corner has lowered to reveal the exit switch.

Other points of interest[edit]


A lowered secret area and the "striped light" that opens it.
  1. After opening the closet in the south-west corner of the map, go inside it and look at the south wall to see two blue strip lights. Press the left-hand light, with the stripes, to lower a silver computer terminal in the control room to the north, revealing 20 health bonuses. (sector 485)
  2. Enter the narrow passage in the north-west corner of the map, then look for another panel with blue strip lights on the west wall. Pressing the panel opens it to reveal a switch, which opens a closet containing a zombieman and a supercharge. (sector 366)


Demo files[edit]

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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 3:49.89 Gggmork 2009-06-21
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

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


Map data[edit]

Things 319
Vertices 7910*
Linedefs 6449
Sidedefs 12181
Sectors 655
* The vertex count without the effect of node building is 5906.


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

Technical information[edit]

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