MAP34: The Lost Chasm (Doom 2 In Name Only)

Doom 2 In Name Only secret maps
MAP31: Wolfenstein MAP32: Grosse MAP34: The Lost Chasm (Bonus map)
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Secret maps

This level occupies the map slot MAP34. For other maps which occupy this slot, see Category:MAP34.

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MAP34: The Lost Chasm is the bonus map of Doom 2 In Name Only. It was designed by Joseph Lord and uses the music track "Something in the Cave?" composed by Bjørn Lynne. The par time defined in MAPINFO is 8:30.

Walkthrough

Map of The Lost Chasm

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. In the blue key area, go onto the rocky ledge and go right, sidling along until you reach the berserk pack. (sector 12)
2. When you first enter the large watery chasm area, look at the teleporter you came out of. The north side of the teleporter has a switch. Flip it, then go to the eastern side of this area (you may have to press the northwestern gargoyle switch first in order to access this area if it has not been pressed already). Go to the second water pit and approach the teleporter, but go to its north side instead of entering it right away. A hidden switch here opens a passage behind you, allowing you to reach the soul sphere behind the cage. (sector 176)
3. Along the caverns in the western part of the larger portion of the map, you will find a dead marine and a blood pool. Some of the blood is seeping towards a wall. Open this wall to find a light amplification visor. (sector 254)
4. After opening the red bars, use the long lift and ride it up. Follow the trail of ammo and open the wall to reveal a room with a teleporter which leads behind the cage. From where you teleport, turn west and carefully make a jump to the catwalk below (you need to be accurate, as there is no way out of the lava if you fall). When you make it, keep jumping west and you should reach the alcove with the megasphere. (sector 286)
5. Once you open up the red key, backtrack to where it was located and there will also be an alcove with a megaarmor open. Press on the wall behind the megaarmor to open another alcove, this one holding an invulnerability (or partial invisibility on Ultra-Violence or higher). (sector 509)
6. When you first enter the large watery chasm area, look at the teleporter you came out of. The north side of the teleporter has a switch. Flip it, then go to the eastern side of this area (you may have to press the northwestern gargoyle switch first in order to access this area if it has not been pressed already). Go north all the way to the metal ledge and ride it up, then continue, this time going southward hugging the wall until you find an opening with a shotgun guy on a teleporter. This teleporter takes you to a non-damaging lava sector, and the next teleporter allows you to reach the demonic platform (this platform will have two arch-viles on Hurt Me Plenty, while the cyberdemon only appears on Hey, Not Too Rough or lower). On this platform are a megasphere and a box of rockets. Note that the teleporter to this platform only works on Ultra-Violence or higher, see Bugs. (sector 718)

Bugs

It is possible to get stuck inside the non-damaging lava sector en route to Secret #6 if one is playing on Hurt Me Plenty or lower. This is because the teleport destination thing (Thing 1063) is only flagged for Ultra-Violence or higher.

It is also impossible to finish the map normally without cheating once you get to the blood pit. Once you grab the chainsaw, the rock wall will lower revealing more of the caverns ahead. You are supposed to shoot the brown rock walls down to proceed, but the second one you come across (linedef 213) will not open up regardless of whether or not you shoot at it. This issue probably only exists in modern source ports.

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

The (absence of) data was last verified in its entirety on April 3, 2022.

Statistics

Map data

Things	1321
Vertices	6137*
Linedefs	5841
Sidedefs	8770
Sectors	784

* The vertex count without the effect of node building is 5013.

Things

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

Single-player
Monsters	1-2	3	4-5
Zombieman	130	114	120
Shotgun guy	43	99	89
Heavy weapon dude	43	52	72
Imp	66	71	71
Lost soul	46	42	42
Demon	33	35	43
Spectre	23	29	32
Revenant	25	30	35
Cacodemon	11	13	13
Pain elemental	0	1	1
Hell knight	17	22	30
Baron of Hell	10	13	14
Arachnotron	7	7	8
Mancubus	6	8	10
Arch-vile	3	5	5
Spiderdemon	0	1	1
Cyberdemon	1	2	2
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	5
Super shotgun	2
Chaingun	3
Rocket launcher	5
Plasma gun	5
BFG9000	2
Ammunition	1-2	3	4-5
Clip	6
Box of bullets	26
4 shotgun shells	17
Box of shotgun shells	9
Rocket	43
Box of rockets	14
Energy cell	4
Energy cell pack	9	7	5
Health & Armor	1-2	3	4-5
Stimpack	32	30	30
Medikit	38	38	37
Armor	2	3	4
Megaarmor	2	1	0
Items	1-2	3	4-5
Armor bonus	1
Supercharge	11	9	8
Megasphere	2
Backpack	1
Berserk	4
Computer area map	1
Invulnerability	2	1	0
Light amplification visor	2
Partial invisibility	1	1	2
Radiation shielding suit	4
Keys	1-2	3	4-5
Blue skull key	1
Red skull key	1
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Exploding barrel	66
Teleport landing	35	35	36

Multiplayer
Monsters	1-2	3	4-5
Zombieman	130	114	120
Shotgun guy	43	99	89
Heavy weapon dude	43	52	72
Imp	66	71	71
Lost soul	46	42	42
Demon	33	35	43
Spectre	23	29	32
Revenant	32	37	42
Cacodemon	11	13	13
Pain elemental	4	5	5
Hell knight	17	22	30
Baron of Hell	10	13	14
Arachnotron	7	7	8
Mancubus	6	8	10
Arch-vile	3	5	5
Spiderdemon	2	4	4
Cyberdemon	1	2	2
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	5
Super shotgun	2
Chaingun	3
Rocket launcher	5
Plasma gun	6
BFG9000	2
Ammunition	1-2	3	4-5
Clip	6
Box of bullets	26
4 shotgun shells	17
Box of shotgun shells	13
Rocket	43
Box of rockets	16
Energy cell	4
Energy cell pack	13	11	9
Health & Armor	1-2	3	4-5
Stimpack	36	34	34
Medikit	38	38	37
Armor	2	3	4
Megaarmor	2	1	0
Items	1-2	3	4-5
Armor bonus	1
Supercharge	11	9	8
Megasphere	2
Backpack	1
Berserk	4
Computer area map	1
Invulnerability	2	1	0
Light amplification visor	2
Partial invisibility	1	1	2
Radiation shielding suit	4
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
Exploding barrel	66
Teleport landing	35	35	36

External links

• Doom 2 In Name Only demos at the Doom Speed Demo Archive