MAP29: Fen of Fiends (Dominus Diabolicus)

Dominus Diabolicus maps
Ep.1: Earth Under Siege 01 02 03 04 05 06 07 08 09 10 11
Ep.2: Return to Sender 12 13 14 15 16 17 18 19 20
Ep.3: Infernal Reckoning MAP21: Buckshot MAP22: Malice MAP23: Deathtrap MAP24: Forbidden Library MAP25: Cacophony MAP26: Nerve Center MAP27: Containment Failure MAP28: Infernal Fortress MAP29: Fen of Fiends MAP30: Showdown
Secret levels 31 32 33

This level occupies the map slot MAP29. For other maps which occupy this slot, see Category:MAP29.

This article about a map is a stub. Please help the Doom Wiki by adding to it.

MAP29: Fen of Fiends is the twenty-ninth map of Dominus Diabolicus. It was designed by bofu, who also composed its music track "Demons in the Darkness". The par time is 12:20.

Walkthrough

Map of Fen of Fiends

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.

Secrets

1. Head southeast from the start, then north to where two cacodemons are coming from. Use the northwest wall and drop into the hole for a berserk pack. (sector 284)
2. In the north canyon, climb up and go north of the small altar with the green armor. Press the switch on it to open two caves to the north, both leading to the megasphere. (sector 2137)
3. In the hall after the yellow door, go north and east to the steps. Shoot the bloody wall to the south to get a megaarmor. (sector 2057)
4. Press all the switches at the southeast end, then go to the south hall where there are now four alcoves near the east steps. Enter the northwest one and open the back wall to get a computer area map and a switch. (sector 2453)

Speedrunning

Current records

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

Run	Time	Player	Date	File	Notes
UV speed
NM speed
UV max	20:48.91	Lucky_Edie	2026-05-11	dd29m204891.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on May 28, 2026.

Deathmatch

Map of MAP29's deathmatch arena

This level includes its own, separate deathmatch arena.

Player spawns

This arena contains eight spawn points:

1. facing east. (thing 2008)
2. facing west. (thing 2009)
3. facing south. (thing 2010)
4. facing south-east. (thing 2011)
5. facing south-west. (thing 2012)
6. facing south-east. (thing 2013)
7. facing north-east. (thing 2014)
8. facing north-east. (thing 2015)

Things

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

Deathmatch
Weapons	1-2	3	4-5
Shotgun	8
Super shotgun	1
Chaingun	4
Rocket launcher	1
Plasma gun	1
Ammunition	1-2	3	4-5
Box of bullets	8
4 shotgun shells	16
Box of rockets	2
Energy cell pack	1
Health & Armor	1-2	3	4-5
Stimpack	7
Armor	2
Miscellaneous	1-2	3	4-5
Deathmatch start	8

Statistics

Map data

Things	2071
Vertices	20213*
Linedefs	18212
Sidedefs	31629
Sectors	2998

* The vertex count without the effect of node building is 15801.

Things

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

Single-player
Monsters	1-2	3	4-5
Imp	130	167	179
Demon	71	76	80
Spectre	4	6	6
Revenant	52	62	68
Cacodemon	19	26	32
Pain elemental	3	4	6
Hell knight	17	13	14
Baron of Hell	4	6	6
Arachnotron	8	10	14
Mancubus	18	24	28
Arch-vile	12	15	21
Cyberdemon	1
Spawn spot	10
Cybermancubus	2	3	3
Summoner	4
Weapons	1-2	3	4-5
Shotgun	1
Super shotgun	2
Chaingun	1
Rocket launcher	1
Plasma gun	1
BFG9000	1
Ammunition	1-2	3	4-5
Box of bullets	35
4 shotgun shells	32
Box of shotgun shells	47
Rocket	13
Box of rockets	86
Energy cell	11
Energy cell pack	16
Health & Armor	1-2	3	4-5
Stimpack	30
Medikit	37
Armor	6
Megaarmor	1
Items	1-2	3	4-5
Megasphere	1
Backpack	1
Berserk	1
Computer area map	1
Keys	1-2	3	4-5
Blue skull key	1
Red skull key	1
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Teleport landing	63
Voodoo doll	9

Cooperative
Monsters	1-2	3	4-5
Imp	133	170	182
Demon	71	76	80
Spectre	4	6	6
Revenant	55	65	71
Cacodemon	19	26	32
Pain elemental	3	4	6
Hell knight	19	15	16
Baron of Hell	4	6	6
Arachnotron	13	15	19
Mancubus	24	30	34
Arch-vile	12	15	21
Cyberdemon	3
Spawn spot	10
Cybermancubus	3	4	4
Summoner	4
Weapons	1-2	3	4-5
Shotgun	12
Super shotgun	2
Chaingun	5
Rocket launcher	2
Plasma gun	2
BFG9000	1
Ammunition	1-2	3	4-5
Box of bullets	43
4 shotgun shells	48
Box of shotgun shells	47
Rocket	13
Box of rockets	88
Energy cell	11
Energy cell pack	17
Health & Armor	1-2	3	4-5
Stimpack	37
Medikit	37
Armor	8
Megaarmor	1
Items	1-2	3	4-5
Megasphere	1
Backpack	1
Berserk	1
Computer area map	1
Keys	1-2	3	4-5
Blue skull key	1
Red skull key	1
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Cooperative start	4
Teleport landing	63
Voodoo doll	9

Deathmatch
Monsters	1-2	3	4-5
Imp	130	167	179
Demon	71	76	80
Spectre	4	6	6
Revenant	52	62	68
Cacodemon	19	26	32
Pain elemental	3	4	6
Hell knight	17	13	14
Baron of Hell	4	6	6
Arachnotron	8	10	14
Mancubus	18	24	28
Arch-vile	12	15	21
Cyberdemon	1
Spawn spot	10
Cybermancubus	2	3	3
Summoner	4
Weapons	1-2	3	4-5
Shotgun	9
Super shotgun	2
Chaingun	5
Rocket launcher	2
Plasma gun	2
BFG9000	1
Ammunition	1-2	3	4-5
Box of bullets	43
4 shotgun shells	48
Box of shotgun shells	47
Rocket	13
Box of rockets	88
Energy cell	11
Energy cell pack	17
Health & Armor	1-2	3	4-5
Stimpack	37
Medikit	37
Armor	8
Megaarmor	1
Items	1-2	3	4-5
Megasphere	1
Backpack	1
Berserk	1
Computer area map	1
Miscellaneous	1-2	3	4-5
Deathmatch start	8
Teleport landing	63

External links

• Dominus Diabolicus demos at the Doom Speed Demo Archive