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.
Capture a picture in Photo Mode.
Find all of the Rot.
Restore all of the Flower Shrines.
Deliver all Spirit Mail.
Unlock all ability upgrades.
Collect 50 Rot Hats.
Open all Cursed Chests.
Meditate at all Meditation Spots.
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.
Hit 3 enemies with a single Multi-shot.
Learn the Dash Ability.
Defeat the Corrupted Woodsmith.
Destroy a Mage with its own bomb.
Find Adira's Village Heart Relic.
Find Adira's Hammer Relic.
Find Adira's Ox Relic.
Hit 3 critical hit spots in 3 seconds.
Destroy 3 enemies with a single Parry.
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 Rot Infused Arrow.
Find Taro's Food Offering Relic.
Destroy a Shield Sticks without breaking its shield.
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.