This 20-page printed level 5 adventure is created for Dungeon Crawl Classics with a strong old-school roleplaying focus. It can be easily adapted to any RPG system. This supplement is compatible with the Dungeon Crawl Classics Role Playing Game. Among other elements, what makes Cathedral of the Undying stand out as a unique adventure is that PCs will not initially die when killed. A strange necrotic curse brings them back to life, but also a step closer towards becoming a mindless undead! PCs imagining this is a form of invulnerability may soon discover they have permanently joined the creatures of the night. DCC RPG 3rd Party. Level 5 Adventure.