Doom/E2M1: Deimos Anomaly
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Mission 1: Deimos Anomaly
Mission 2: Containment Area
Mission 3: Refinery
Mission 4: Deimos Lab
Mission 5: Command Center
Secret Mission: Fortress of Mystery
Mission 6: Halls of the Damned
Mission 7: Spawning Vats
Mission 8: Tower of Babel