Agility

Agility XP comes from moving, not from a single activity. The courses below are the fastest source and unlock by region (Brynmoor from level 1, Ghornfell at 15, Fellhollow at 30, Dowdun Reach at 51, Umbral Sands at 65), with rewards tied to your finishing time; gold times on every course are what unlock the Gilded Gyrhawk Amulet recipe. On top of that, just running across the world pays passive XP (50 a tick, 200 from level 48, 400 from 85, never while mounted), dodging an attack pays, and so does dodging a trap in a vault. The Gyrhawk Amulet doubles the exploring XP while it burns Warped Feathers.

What the levels buy is mobility. Sprinting costs 0.085% less stamina per level (8.4% at 99), Double Jump arrives at 10, Air Dash at 32, Breakfall at 35 turns a high landing into a roll, Phase Dash at 44 gives a second dash in the air, and Backpacker at 50 and Explorer at 75 add 75 carry weight each. Windstep now lives here at level 5, and from 40 its landing knocks nearby enemies down. Recall at 57 drops a marker you can teleport back to; from 70 it fires by itself on a fatal fall. The Stamina Potion recipe comes at 53.

Kebbit burrows are the skill's shortcuts: dig one open and it joins a network of side tunnels. Using a network below its level hurts you on the way through. Common Burrower at 27 covers Brynmoor and Ghornfell, Wild Burrower at 42 Fellhollow, Dark Burrower at 55 Dowdun Reach, Desert Burrower at 67 Umbral Sands, and Razor-backed Burrower at 80 cuts the damage further everywhere.