Doom 64 made me join the 40K club. I got 1 achievement left in that game before i 100% it. The one where you beat final level on hardest difficulty. : r/xboxachievements
Doom (1993) Trophy and Achievement Guide - Dayngls' Guides
DOOM II (Classic) Achievements - Xbox One, Windows 10 - Exophase.com
Xbox DOOM (1993) achievements. Find your Xbox achievements on GamerDVR.com
DOOM (Arcade) Achievements | TrueAchievements
DOOM – Levels 11, 12 and 13: Secrets and Collectibles - Rooster Teeth