8.33%
Persistence is the Key
Acquire all 3 Demon Key Artifacts in the main campaign
8.33%
Walk the Path
Finish the Lost Levels mission
11.11%
That was Fun
Finish a 'Fun' Level
13.89%
Escape Artist
Finish 'No Escape' on Watch Me Die skill level
16.67%
RVNH3CT1CD3M0???
Locate the secret level 'Hectic'
16.67%
Mother May I?
Defeat the Mother of All Demons on The Absolution
19.44%
Rip and Tear!
Kill a Cyberdemon
25.00%
My Cause is Just, My Will is Strong
Find the BFG9000
25.00%
Unholy Firepower
Find the Unmaker
100.00%
Secret Sleuth
Discover a secret area