Here is the full list of all 41 Kena: Bridge of Spirits achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Unlock all ability upgrades.
Find all of the Rot.
Restore all of the Flower Shrines.
Meditate at all Meditation Spots.
Collect 50 Rot Hats.
Deliver all Spirit Mail.
Open all Cursed Chests.
Beat the game on Master difficulty.
Defeat the Corrupted Rot God.
Reach the Mountain Shrine.
Defeat Corrupted Toshi.
Find Toshi's Incense Relic.
Find Toshi's Village Crest Relic.
Find Toshi's Harpoon Relic.
Destroy 3 enemies with a single dash attack.
Destroy a Mage with its own bomb.
Learn the Dash Ability.
Defeat the Corrupted Woodsmith.
Find Adira's Village Heart Relic.
Find Adira's Hammer Relic.
Hit 3 critical hit spots in 3 seconds.
Find Adira's Ox Relic.
Destroy an enemy by shooting a Bomb out of the air.
Destroy 3 enemies with a single Parry.
Capture a picture in Photo Mode.
Discover the Farm.
Destroy a Moth enemy with a Bomb.
Learn the Bomb Ability.
Defeat Corrupted Taro.
Find Taro's Lantern Relic.
Hit 3 Enemies with a single Rot Infused Arrow.
Find Taro's Food Offering Relic.
Destroy a Shield Sticks without breaking its shield.
Hit 3 enemies with a single Multi-shot.
Find Taro's Knife Relic.
Learn the Bow Ability.
Discover the Forest.
Restore a Flower Shrine.
Discover the Village.
Use 5 Rot Actions in a single combat.
Find the first Rot.