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