PWAD: smax.wad (SlaughterMAX)
IWAD: DOOM2.wad
Map: 28
Skill: UV
Category: UV-Speed
Source Port: DSDA-Doom v0.29.4cl9

Comments:

It took 110 attempts, but I finally got there in the end. This required a LOT of circling around and intentionally delaying pushing hard to the exit in order to achieve a safer exit. This was partially due to the Revenants and the Mancubi near the Invulnerability.
The secret exit was used.