Rules of this challenge:
1. Ultra-Violence difficulty.
2. 100% kills and secrets.
3. Pistol start.
4. Use the -solo-net command line parameter. This sets the enemy and item layouts to those from co-op mode, but you're still playing by yourself.
5. No deaths.
Co-op play in Doom has been known to add more boss enemies (i.e. Spider Masterminds and Cyberdemons) to its levels that weren't there on even the hardest single-player difficulty, and when you take an already-insane single-player map in Plutonia's Map 32 ("Go 2 It") and add 17 more Cyberdemons, you basically get the video game version of hell.
I didn't even know Solo-Net existed until I saw AltimaMantoid's TNT Evilution Map 1 Solo-Net video, so thanks to him for that!
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