Military Complex
Not unlocked yetFind the secret exit in Scourge of Armagon Episode 1: Fortress of the Dead.
The Gremlin's Domain
Not unlocked yetFind the secret exit in Scourge of Armagon Episode 2: Dominion of Darkness.
A Long Yard
Not unlocked yetFind the secret exit in Scourge of Armagon Episode 3: The Rift.
Sandy's Room
Not unlocked yetFind the secret exit in Dimension of the Machine.
Secret Sleuth
Not unlocked yetFind a secret area.
You're not supposed to be here!
Not unlocked yetFind the secret message in Tur Torment.
Friendly Fire
Not unlocked yetKill a monster with another monster's attack.
Slipgate Pacifist
Not unlocked yetComplete E1M1: The Slipgate Complex on Nightmare without firing a shot.
The Painless Maze
Not unlocked yetComplete E4M6: The Pain Maze on Nightmare without taking damage.
The Shambler Dance
Not unlocked yetKill a shambler before it is able to cast its lightning attack.
Discharge
Not unlocked yetIn deathmatch, electrocute an enemy in water without dying.