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