Level: Facility

Level: Runway

Level: Surface I

Level: The Hunt

Level: Steamboat Massacre

Level: Quick Killer

Level: Law and Order

Level: Hollister's Fort

Level: Doom E1M2: Nuclear Plant

Level: Doom E1M3: Toxin Refinery

Level: Doom E1M3: Toxin Refinery (Secret Exit)

Level: Doom E1M4: Command Control

Level: Doom E1M5: Phobos Lab