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