Level: E1M1 (Head Cheese)

Level: E1M2 (Down on the Farm)

Level: E1M3 (Old Time Religion)

Level: E1M4 (Steamworks)

Level: E1M5 (Sawdust)

Level: E1M6 (The Cutty Mine)

Level: E1M7 (Dead of the Night)

Level: E1M8 (Through the Gate)

Level: E1M9 (Ghost Town)

Level: E1M10 (Creations)

Level: E1MS (The Dim Slough)

Level: All of Episode 1

Level: E2M1 (The Grainery)

Level: E2M2 (Unseen)

Level: E2M3 (Into the Thresher)

Level: E2M4 (The Infernal Machine)

Level: E2M5 (The Escher Labs)

Level: E2M6 (The Erebus Reactor)

Level: E2M7 (Neobabel)

Level: E2M8 (Blood and Bone)

Level: E2M9 (The Dig)

Level: E2M10 (The Gauntlet)

Level: E2MS (The Foundry)

Level: All of Episode 2

Level: E3M1 (The Iron Cathedral)

Level: E3M2 (Fire and Ice)

Level: E3M3 (City of Shadows)

Level: E3M4 (Crypt of the Flesh)

Level: E3M5 (Blasphemy)

Level: E3M6 (Brimstone Ghetto)

Level: E3M7 (Homecoming)

Level: E3M8 (As Above, So Below)

Level: E3M9 (The Dweller in Darkness)

Level: E3M10 (Dusk)

Level: E3MS (The Ratacombs)

Level: All of Episode 3