It's a Secret Achievement - DOOM (1993) - Exophase.com

DOOM (1993)

Xbox One

Windows 10

96,979 Achievements Earned
19,940 Players Tracked
19 Total Achievements
23,364 Obtainable EXP
1,000 Gamerscore
244 100% Club

Find a secret level

50

18.48% Rare - 593.00 EXP

You have not earned this achievement yet