Here is the full list of all 41 Kena: Bridge of Spirits achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Beat the game on Master difficulty.
Defeat the Corrupted Rot God.
Reach the Mountain Shrine.
Defeat Corrupted Toshi.
Find all of the Rot.
Deliver all Spirit Mail.
Restore all of the Flower Shrines.
Meditate at all Meditation Spots.
Find Toshi's Village Crest Relic.
Collect 50 Rot Hats.
Unlock all ability upgrades.
Find Toshi's Harpoon Relic.
Open all Cursed Chests.
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.
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.
Hit 3 enemies with a single Multi-shot.
Destroy a Mage with its own bomb.
Find Taro's Food Offering Relic.
Hit 3 Enemies with a single Rot Infused Arrow.
Hit 3 critical hit spots in 3 seconds.
Find Taro's Knife Relic.
Learn the Bow Ability.
Use 5 Rot Actions in a single combat.
Destroy 3 enemies with a single Parry.
Discover the Forest.
Restore a Flower Shrine.
Destroy a Shield Sticks without breaking its shield.
Capture a picture in Photo Mode.
Discover the Village.
Find the first Rot.