Here is the full list of all 37 Ori and the Will of the Wisps achievements. It takes around 30-35 hours to unlock all of the achievements on Windows.
Defeat Mora Without Taking any Damage
Beat the Game Without Spending any Spirit Light
Beat the Game Without Equipping a Shard
Complete the Game without Dying
Avoid Touching any Corrupted Water
Defeat 3 Enemies with a Single Spike
Upgrade all Shards
Upgrade all Abilities
Complete the Game in Under 4 Hours
Complete the Game
Complete Hard Mode
Defeat Shriek
Complete all Spirit Trials
Unlock all Abilities
Find all Collectibles
Complete every Side Quest
Complete all Wellspring Glades Projects
Defeat the Willow Stone
Buy all Maps from Lupo
Max out Life
Max out Energy
Complete the Trade Sequence Quest
Unlock all Shards
Escape the Ruins
Fend off Kwolok
Defeat Kwolok in Under 2 Minutes
Upgrade all Shard Slots
Complete all Spirit Shrines
Fend off Mora
Escape the Avalanche
Defeat 5 Enemies Without Touching the Ground
Juggle 3 or More Projectiles in the Air for Over 5 Seconds
Clear the Watermill
Reach the Wellspring Glades
Defeat the Horn Beetle
Defeat 10 Enemies using Environmental Hazards
Fend off Howl