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