Atlas Bunker

Slab

Beneath the apocalyptic ruins of the capital city hides the ruined Atlas Bunker. Once a shelter for the residents of the city above, the bunker was largely abandoned after significant portions of the complex collapsed during the rampage of the monsters above. In time the bunker became the hideout of a band of daemonic raiders, who terrorized what survivors still lived in the surrounding ruins.

A three level dungeon, connected by elevators. The dungeon happens to have the same rough floorplan as Vault 15 from Fallout 1, though it’s not quite as rusted out.