Requirements: Stealth 2, Finesse 3
No effect if heavily armored (chain mail and above) or Burdened.
You may calculate your Melee Defense based on Finesse rather than Vigor, and subsitute Stealth for Combat in both Melee and Ranged Defense.
You can perform basic parkour without and extraordinary stunts with a Finesse roll.
The GM may allow adding your Level//2 to rolls involving physical agility.