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