Climbing

Climbing is a common ability rather than a trained skill: every humanoid, and many kinds of monster, can scramble up trees, low walls, rocks and the like without any roll at all.

When a climb calls for an especially hard or dangerous move, the Game Judge may ask the player for a save vs DEX to see whether the character pulls it off. A failed save can mean a slip or a fall, at the Judge's discretion, and as with every common ability the Judge may raise or lower the save to reflect how difficult the climb is.