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