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