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