No missable achievements (plus 13 unknown)
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Entered the Red World
Collected the first Spirit
Cleared a level with 100%
Collected 5 Spirits
Collected 100 Wisps
Entered the Green World
Entered the Yellow World
Anchieved 50% completion
Entered the Blue World
Finished the game
Anchieved 100% completion
Finished the game with no deaths
Finished the game with 100% completion and no deaths