E3M4: Tartarus (Doom the Way id Did: The Lost Episodes)

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DtWiD: The Lost Episodes maps
Knee-Deep in the Dead

M1 M2 M3 M4 M5 M6 M7 M8 M9

The Shores of Hell

M1 M2 M3 M4 M5 M6 M7 M8 M9

Thy Flesh Consumed

M1 M2 M3 M4 M5 M6 M7 M8 M9

Base Instinct

M1 M2 M3 M4 M5 M6 M7 M8 M9 M0

The Final Gate

M1 M2 M3 M4 M5 M6 M7 M8 M9

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

E3M4: Tartarus is the fourth map of the Inferno episode in Doom the Way id Did: The Lost Episodes. It was designed by XenoNemesis and Xaser.


Map of Tartarus
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 shotgun in front of you then head south past a couple of imps to a room where two cacodemons are guarding an armor. Go north through a door and kill any imps, demons and shotgun guys waiting in the next area, then step through the damaging blood to a set of steps and go up them to enter a stone tunnel. Follow the tunnel north to a lava pool and take the radiation shielding suit at the entrance, then head through the lava to a doorway on the north side and go through it to enter a corridor with some demons. Follow the corridor south until you reach some imps, then go north-east to find one to three cacodemons guarding the yellow skull key.

Step through the window behind the yellow key to drop into the lava, then go to the yellow door in the south-east corner of this area and open it to face a few imps. Head south-east to a junction, then go west (passing a spectre on Hurt Me Plenty skill level or higher) and follow the tunnel to a blood pool with more imps. Take the east path from this room and destroy some lost souls ahead, then head north across a bridge to find a baron of Hell (plus two cacodemons on HMP or higher) defending the blue skull key. Taking the key releases some spectres on the south side of the bridge.

Go back through the yellow door to the lava area, then open the blue door on the east side to enter a hall with six columns (there is also a supercharge here on HMP or lower). Press the skull switch on the middle column on the north side of the hall to reveal a second switch on the east column on the south side, then press that second switch before it closes to lower a teleporter at the bottom of the steps behind you. Enter this teleporter to go to the lava pool at the center of the map, then step east through the lava to a small hexagonal building and open the exit door to find the exit teleporter directly behind it.

Other points of interest[edit]

After going through the yellow door, head east into a room with some lost souls, then continue east to find a cacodemon (or baron on HMP or higher) guarding a plasma gun.

After going through the blue door, climb up the steps at the east end of the columned hall then head north-west until you reach a small room with a rocket launcher, which has a lion switch behind it. Approaching the weapon changes the floor beneath you into damaging blood, and pressing the switch opens the east and west walls to reveal two barons (plus demons on HMP or higher). Flip the switch inside the west closet to lower the lion switch and reveal a teleporter, which puts you east of the exit building.


  1. In the south-west room, open the misaligned part of the west wall to find a chaingun and a box of bullets. (sector 74)
  2. In the northern lava section, get a radiation suit and use the wall to the north-west, which leads to a rocket launcher. (sector 58)
  3. In the northern lava section, climb the east steps and head north. When you see a corpse, open the wall where it is to find an armor and two stimpacks. Note that the actual sector cannot be registered due to being too thin and with a small floor change. (sector 39)
  4. Take the south-west path in the blood room with the red pillar. At the end, flip the switch on the east side to lower the block with the berserk pack and megaarmor. (sector 55)
  5. In the blood room with the red pillar, open the north-east wall to reach the secret. You can also jump into the lava to the left of the bridge leading to the blue key and head west to reach the wall that has the secret. (sector 121)


Since secret #3 is impossible to actually trigger, only 80% secrets is possible on this map.

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 7, 2021.


Map data[edit]

Things 278
Vertices 1033*
Linedefs 1188
Sidedefs 1583
Sectors 217
* The vertex count without the effect of node building is 924.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]