This took somewhere close to 200+ attempts if we count on-stream attempts and attempts without demo recording. Pretty sure I was close to dying too on this winning attempt, the explosions were getting quite close and audible.
The demo's cut off because I lingered on the results screen for quite a while, and then accidentally load into MAP15.
Get Eviternity II: https://eviternity.dfdoom.com/
Recorded and Played Back on DSDA-doom v0.28.3 (-complevel 21)
Demo File: https://drive.google.com/file/d/1aL2iTreTb_2lJz2OeoShcDlmRVEpfmM9/view?usp=sharing