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