Doom Speed Demo Archive
https://dsdarchive.com/

Iwad:      DOOM2.WAD
Pwad:      CRATE_ESCAPE.wad
Map:       MAP14
Skill:     5
Category:  NM 100S
Exe:       dsda-doom 0.29.4 -complevel 2

Time:      2:01.66

Author:    Keykhosrau

Advanced HUD used
Video: https://youtu.be/2iuES9HdNLU


Comments:  Even adding the secrets in didn't make Nightmare! impossible...
The Arch-Viles are actually easier in this map because they are permanently distracted by the Spider Mastermind and so don't do any resurrecting. The Spider also doesn't take any blast damage from their zaps, so it's going to be there a while. 
This means you can rest easy and wait for the crate to lower to reveal the final secret.