I discovered that this rule system works well with Dungeon Crawl Classics Adventures. The module I used was DCC 87.5 Grimtooth's Museum of Death. The game system I used to play this was Dark Fantasy Basic. The solo engine that I used is one that I have been testing out. The adventure module does contain some "mystery" rooms. I used some encounters from another module to "populate" these areas. I used six first level thief characters from Dark Fantasy Basic to play through the museum. They did rescue a second level spy character (she was cursed). All seven characters died on levels two and four. Maybe you will have better luck . . .