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
Complete Hard Mode
Beat the Game Without Spending any Spirit Light
Complete the Game in Under 4 Hours
Complete the Game without Dying
Beat the Game Without Equipping a Shard
Avoid Touching any Corrupted Water
Complete every Side Quest
Complete all Wellspring Glades Projects
Upgrade all Abilities
Find all Collectibles
Max out Energy
Max out Life
Complete the Trade Sequence Quest
Unlock all Abilities
Upgrade all Shards
Unlock all Shards
Upgrade all Shard Slots
Complete all Spirit Shrines
Complete the Game
Defeat Shriek
Defeat the Willow Stone
Buy all Maps from Lupo
Escape the Ruins
Complete all Spirit Trials
Fend off Kwolok
Defeat Kwolok in Under 2 Minutes
Defeat 5 Enemies Without Touching the Ground
Escape the Avalanche
Fend off Mora
Defeat 3 Enemies with a Single Spike
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