Complete all mirrored worlds.
Finish Mirrored Chapter IV.
Complete The Mirrored Garden with 5 inversions.
Finish Mirrored Chapter III.
Collect all hidden wisps.
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 Corridor with 3 inversions.
Complete The Aftermath with 2 inversions.
Finish Chapter II.
Complete The Precipice without rotating.
Complete The Library being no louder than a whisper.
Fall for 30 seconds.
Finish Chapter I.