MAP20: Inexorable Opposition (Whispers of Satan)

MAP20: Inexorable Opposition is the twentieth map of Whispers of Satan. It was designed by Kristian Aro, and uses the music track "Churmen (A Simply Phobos E1M5 remix)" by Paul Corfiatis.

Walkthrough

 * Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.