From the Publisher:
Perilous is a dungeon crawling RPG about braving the dark depths because the long forgotten magic of the ancients could mean the difference between life and death for the people you care about. It uses a simple 20 sided die, plain language, and tag based mechanics to make telling stories with your friends effortless.
Fighting enemies and facing dangers in Perilous is about finding clever solutions to unique problems rather than whittling away hit points. Each challenge you come up against is a collection of short descriptions that cover anything from the defenses an enemy has to the hazardous terrain you have to worry about. When you can't solve a problem right away, start building up advantages and creating openings until you can!