A lone marine, not doomguy, is sent to hell while clearing out a starport on earth. Find your way back. Or suffer.
This wad requires The Ultimate Doom, available at GOG or Steam for a cheap price.
Enjoy.
Extract, get wad file, drop it into a source port executable.
Works with Crispy/Chocolate Doom, Zandronum, zDoom, GzDoom. Maybe more.