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