Full list of all 22 Trailmakers achievements worth 1,200 gamerscore. It takes around 15-20 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 18 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 4 achievements worth 200 Gamerscore.
You completed all ball puzzles on Sandbox Island in one session
You got gold on Cliff Land
You got gold on Sunny Slide
You bumped into the whales
You flew through the rings of fire in one session
You stayed in the air for 1 minute without using power cores
You broke the sound barrier
You landed on all the floating islands above Race Island in one session
You landed on the lighthouse on Race Island
You crashed into the blimp
You got gold on Downhill Rush
You rebuilt the spaceship
You went into the volcano
You found 15 Power Cores in the campaign
You shared a vehicle in the Gallery
You downloaded a vehicle from the Gallery
You killed 8 chickens in one session
You picked up a piece of Salvage with the magnet
Reach the top of Danger Island
You shot hoops on Danger Island
You hugged the Tree
You paid your respect at the monument