Collect all hidden wisps.
Complete The Corridor with 3 inversions.
Complete all mirrored worlds.
Finish Mirrored Chapter IV.
Finish Mirrored Chapter III.
Complete The Mirrored Garden with 5 inversions.
Complete The Aftermath with 2 inversions.
Finish Mirrored Chapter II.
Finish Mirrored Chapter I.
Catch the unchained key in The Mirrored Courtyard.
Cross The Bridge.
Finish Chapter IV.
Complete The Intersection without walking.
Complete The Timepiece in less than 1 minute.
Finish Chapter III.
Complete The Precipice without rotating.
Fall for 30 seconds.
Complete The Library being no louder than a whisper.
Finish Chapter II.
Finish Chapter I.