MAP20: Refinery (Claustrophobia 1024)

MAP20: Refinery is the twentieth map of Claustrophobia 1024. It was designed by Dutch Devil, and uses the music track "The Imp's Song" by Robert Prince.

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.