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