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.
Upgrade all Shards
Find all Collectibles
Upgrade all Shard Slots
Complete all Spirit Shrines
Max out Energy
Max out Life
Unlock all Shards
Upgrade all Abilities
Complete every Side Quest
Complete all Wellspring Glades Projects
Buy all Maps from Lupo
Complete the Trade Sequence Quest
Defeat 3 Enemies with a Single Spike
Unlock all Abilities
Complete the Game
Defeat Shriek
Defeat the Willow Stone
Escape the Ruins
Escape the Avalanche
Defeat 5 Enemies Without Touching the Ground
Fend off Kwolok
Defeat Kwolok in Under 2 Minutes
Fend off Mora
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
Complete Hard Mode
Complete all Spirit Trials
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