Inferno

Inferno is the third episode in Doom/Ultimate Doom. All of the levels in this episode are credited to Sandy Petersen, though Tom Hall originally began two of them. This episode is set in hell, possibly the inner region of hell.

Levels

 * E3M1: Hell Keep
 * E3M2: Slough of Despair
 * E3M3: Pandemonium
 * E3M4: House of Pain
 * E3M5: Unholy Cathedral
 * E3M6: Mt. Erebus
 * E3M7: Limbo
 * E3M8: Dis
 * E3M9: Warrens