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