GEARSHIFTERS

You automatically unlock each of the eight driving skills after the first stage of each new zone. The final one, Reversing Spin, is unlocked after the first stage of the Citadel zone where the achievement unlocks.

Frontier Province: Hard Brake - Hold
South Uplands: Powerslide - Hold
Shadow Quarter: Reverse Attack - Hold
Ochre Wastes: Spin - Press
Dark Haven: Heavier version of Hard Brake
Sentry Ranges: Stabler version of Powerslide
Northern Expanse: Stabler version of Reverse Attack
The Citadel: Reversing Spin