Here is the full list of all 43 The Pathless achievements.
Collect all achievements.
Witness the extended ending.
Reach the highest updraft above the mountain.
Reach the observatory.
Find all the lore of the Pathfinder's story.
Drift 300 meters down a river.
Collect the gift from every spirit.
Obtain the Gift of the Elk Spirit.
Run with 6 animals.
Collect all the lightstones.
Collect all the Elk lightstones.
Get 10 flaps.
Discover 45 lanterns.
Obtain the Gift of the Lizard Spirit.
Collect all the Lizard lightstones.
Reach the old fortress.
Complete the puzzle at the Textile Workshop.
Obtain the Gift of the Snake Spirit.
Collect all the Snake lightstones.
Discover 30 lanterns.
Obtain the Gift of the Bear Spirit.
Collect all the Bear lightstones.
Discover 45 lore messages.
Discover 15 lanterns.
Slide 400 meters down a steep slope.
Complete the game and view the credits.
Cleanse the Mountain Tundra.
Fly for over a minute without touching an updraft.
Discover 30 lore messages.
Shoot 1,000 talismans.
Cleanse the Great Plains.
Complete the puzzle at the Bathhouse.
Cleanse the Redwood Steppe.
Bounce an arrow off two mirrors.
Chain 10 skill shots in a row.
Discover 15 lore messages.
Cleanse the Forest Plateau.
Complete the puzzle at the Monastery.
Shoot 5 talismans while airborne before touching the ground.
Survive 3 storm encounters unscathed.
Fall 150 meters without gliding and land hard.
Pet the eagle 4 times.
Reach the mainland.