E3M4: Demonizer (ConC.E.R.Ned)

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ConC.E.R.Ned maps
Dead Colliding

M1 M2 M3 M4 M5 M6 M7 M8 M9

Parallel World

M1 M2 M3 M4 M5 M6 M7 M8 M9

Hellish Extermination
This level occupies the map slot E3M4. For other maps which occupy this slot, see Category:E3M4.

E3M4: Demonizer is the fourth map in episode Hellish Extermination of ConC.E.R.Ned. It was designed by Matt Powell (cannonball) and uses a MIDI rendition of "Mute City" from F-Zero: GP Legend.


Map of Demonizer
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.


Take the rocket launcher in front of you and use it to kill the enemies ahead, then go forward and step past a crusher so you can open the second door on your right. Go up the red steps on your left to a gargoyle switch guarded by one or two shotgun guys and press it, then go back down the steps and turn left to see that a wall ahead has lowered to reveal a cacodemon (or baron of Hell on Hurt Me Plenty (HMP) skill level or higher) guarding the blue skull key. With the key, go back to the starting hallway and head north and west past two more crushers then go down some steps on your left to a room with zombiemen and one or two barons who are guarding a blue key door.

Go through the door to enter a red room with a lava pit and follow the walkway round to reach the door on the west side - some cacodemons will appear on a ledge on the east side of the room as you go round the corner. Open the west door and push past two imps and a cacodemon (or baron on HMP or higher) to reach a plasma gun, then turn left or right and follow the hallway to a lava-filled cavern with some red platforms; after killing all the enemies you can see, step across the platforms to reach a skull switch on the west side of the cavern guarded by one or two cacodemons. Press the skull switch then go back to where you found the plasma gun, where two sets of bars blocking the north and south doorways have lowered - go through the north doorway (alcoves containing a cacodemon and lost soul will open either side of you) and use the metal lift ahead to go up to the next floor, then go round the corner to confront one or two barons who are guarding a skull switch. Press the switch then go back to the crossroads and head through the south doorway to another lift; after riding it up, head due south and follow the path to find the yellow skull key. Be ready to fight off some demons that teleport in when you enter the key room.

Drop through the window next to the yellow key to return to the red room, where the center block has lowered to reveal barons on HMP or lower or a cyberdemon on Ultra-Violence and Nightmare. Open the south door and push past two or three shotgun guys to a lift then press the eye switch on your right to activate it - as it rises, you will have to fight off some imps, demons and barons that teleport in. Once the lift stops, step out to a large hall with a spiderdemon in the center surrounded by a rising and falling barrier - get it to infight with the barons, imps and cacodemons in the room as much as possible. Once the spiderdemon is dead, press the eye switch in the middle of the east wall to open a teleporter on the west side which will send you to the spiderdemon's platform where you can collect the red key. Drop down to the trench below and use any of the teleporters here to get back to the outer walkway, then go round to the south side of the room and press the skull switch here to open the bars blocking the exit portal.

Other points of interest[edit]

As the level starts, open the first door on your right to enter a room containing a chaingun.


  1. Use the skull wall behind the blue key to open a wall to the south-east, leading to health bonuses and an armor. (sector 136)
  2. In the room north-west of the central hub with the red flesh floor, head south and use the west wall with the skull, then head north-east to a berserk pack and a computer area map. (sector 240)
  3. Jump east from the yellow key, then quickly open the south door and into the room to the east to get a BFG9000. (sector 266)


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
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on December 20, 2021.


Map data[edit]

Things 364
Vertices 2499*
Linedefs 2457
Sidedefs 3725
Sectors 393
* The vertex count without the effect of node building is 2092.


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

Technical information[edit]

Inspiration and development[edit]


  • This level provides the background for the intermission screen in the Hellish Extermination episode. The player is standing at the entrance to the red key room and facing the center platform (all the monsters in the room have been removed).

See also[edit]


External links[edit]