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