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