MAP15: Altered State (TNT 2: Devilution)

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TNT 2: Devilution maps 12-20

01 02 03 04 05 06 07 08 09 10 11
(12 - 20)
21 22 23 24 25 26 27 28 29 30
Secret maps: 31 32
Bonus maps: 33 34 35 36

This level occupies the map slot MAP15. For other maps which occupy this slot, see Category:MAP15.
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MAP15: Altered State is the fifteenth map of TNT 2: Devilution. It was designed by Przemek Zimny (Alter) and Richard Frei (Tarnsman), and uses the music track "TeNaciTy" by James Paddock (Jimmy). The par time is 18:30.

Walkthrough[edit]

Map of Altered State
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.

Essentials[edit]

Other points of interest[edit]

After clearing out the train station at the final part of the map, return to the northern locker room to find the blue key in the east (opposite the text "Fight Back"). Go all the way back to the fast food restaurant at the northwest end or west of the garage with the giant truck and open the door behind the counter. This path takes you to a Dopefish reference, a BFG9000, and a taco restaurant from which you can enter the freezer in the back which also happens to be the level's secret exit.

Secrets[edit]

  1. At the first set of steps, use the gray wall between the terminals on the north wall. Take the teleporter to find a bedroom with shotgun shells, energy cells, and a box of ammo. (sector 135)
  2. In Secret #1, step on the remotes to lower the television and the desk it is on. Get on the desk quickly and up, then through the television to teleport to a soul sphere, shotgun shells, ammo clips, and an energy cell pack. (sector 365)
  3. Enter the southwest room with the rocket launcher and use the TNT wall to the south. Take the west path in this room to come to a berserk pack. Use the north shelf with all the items to find a lift to energy cells and a plasma gun. (sector 1132)
  4. If you used the TNT wall mentioned above, the soul sphere pillar at the top of Secret #3 will be lowered. (sector 830)
  5. Go through the northeast side and towards the metal rooms to the east with blood on the floor. Lower the first lift and go through to the west, using the wall with the lightning symbol. Take the lift up, then the next lift up to get rockets and medikits. (sector 931)

Bugs[edit]

Demo files[edit]

Areas / screenshots[edit]

Speedrunning[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 (normal exit)
UV speed (secret exit)
NM speed (normal exit)
NM speed (secret exit)
UV max
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist (normal exit)
UV pacifist (secret exit)

The (absence of) data was last verified in its entirety on November 22, 2025.

Statistics[edit]

Map data[edit]

Things 1174
Vertices 6033*
Linedefs 6833
Sidedefs 10145
Sectors 1468

* The vertex count without the effect of node building is 5282.

Things[edit]

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

Technical information[edit]

Inspiration and development[edit]

Trivia[edit]

See also[edit]

Sources[edit]

External links[edit]