MAP20: Circle of Death (The Long Trek Back Home)

MAP20: Circle of Death (titled Spiral of Slaughter on the automap) is the twentieth map of The Long Trek Back Home. It was designed by hervoheebo, based on MAP11: Circle of Death from Doom II by John Romero, and uses an edited version of the original music track "The Healer Stalks" by Robert Prince, distinct from the one used on MAP14: Tenements.

Secrets

 * 1) Raise the steps out of the starting area and head around it clockwise. At the gap, shoot the switch across, then backtrack and head counterclockwise this time, to an area southeast of the steps. Take the lift up, jump north, then jump north again to get a megasphere. (sector 80)
 * 2) On the rising and lowering nukage west of the steps, when the nukage is at its lowest point, run to the lift to the west and lower it for a radiation suit and a medikit. (sector 274)
 * 3) In the area with of the curved paths that go up and down, exit those paths via the south window and the south ledge will lower. Head south across that ledge and west to get an invulnerability. (sector 346)
 * 4) At the southwest part of the circle, press the switch, then quickly head north (or east) and into the inner part of the circle where a lift has lowered. Ride up and you should see a soul sphere nearby. Walk carefully on the thin ledge to get the soul sphere. (sector 229)
 * 5) At the west side, head south to a section with a marble wall, then find a switch northwest of that wall. After pressing it, head to the rocks northwest of the circle and head south on the ledge with health bonuses to get a berserk pack. (sector 298)
 * 6) On the ledge southeast of the circle which has the switch, head all the way west and open a cracked wall to the south to find a box of ammo and an energy cell. (sector 373)
 * 7) On the same ledge mentioned above, flip the switch to the north and ride the lift up. Walk through the east wall to collect a plasma gun. (sector 385)
 * 8) The staircase leading to the middle of the circle has several teleporter lines. After teleporting for the fourth time, when you move in the next room, the floor starts lowering. When it lowers to the bottom, collect the plasma gun to the north. (sector 477)
 * 9) At the east side in the room with many switches, head towards the barricade and go through the north wall to find an invulnerability. (sector 438)
 * 10) After using the switches on the east side, go all the way to the west side of the map. Past the red door, head west, then south to a switch. Press it to get a BFG9000. (sector 422)

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

The (absence of) data was last verified in its entirety on November 4, 2022.

Player spawns
This level contains eight spawn points:
 * 1) facing west. (thing 751)
 * 2) facing west. (thing 757)
 * 3) facing west. (thing 758)
 * 4) facing north. (thing 759)
 * 5) facing west. (thing 760)
 * 6) facing south-west. (thing 761)
 * 7) facing south-east. (thing 762)
 * 8) facing south-east. (thing 763)

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