Here is the full list of all 38 Gearshifters achievements.
Acquire 20,000 currency.
Complete a Dark Haven stage.
Purchase 10 weapons.
Destroy the Thunderer.
Complete an Ochre Wastes stage.
Destroy the Wrecker.
Destroy the Sawdozer.
Destroy an enemy with a Reverse attack.
Complete a Shadow Quarter stage.
Destroy an enemy with a Powerslide attack.
Complete a South Uplands stage.
Defeat a faction.
Destroy an Elite vehicle.
Complete a Frontier Province stage.
Equip a secondary weapon.
Equip your car with an upgrade.
Destroy the Combustor.
Complete a Primary Sector stage.
All other trophies unlocked.
Complete a Sentry Ranges stage.
Complete a Northern Expanse stage.
Complete a Citadel stage.
Unlock 5 liveries.
Use 15 different boosts.
Purchase 10 charge abilities.
Destroy 50 enemy vehicles with melee attacks.
Survive any stage without taking damage.
Destroy all Elite vehicles.
Destroy the Juggernaut.
Destroy the Suncopter.
Destroy the Marauder.
Destroy the Spearhunter.
Destroy the Emissary.
Unlock all driving skills.
Defeat all factions.
Deliver 10 different cargoes.
Purchase all upgrades.
Game completed (Any mode).