Here is the full list of all 20 The Bridge achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Finish Mirrored Chapter I.
Finish Mirrored Chapter II.
Finish Mirrored Chapter III.
Finish Mirrored Chapter IV.
Collect all hidden wisps.
Complete all mirrored worlds.
Complete The Mirrored Garden with 5 inversions.
Fall for 30 seconds.
Complete The Intersection without walking.
Complete The Precipice without rotating.
Complete The Corridor with 3 inversions.
Complete The Aftermath with 2 inversions.
Complete The Library being no louder than a whisper.
Catch the unchained key in The Mirrored Courtyard.
Cross The Bridge.
Finish Chapter IV.
Finish Chapter III.
Complete The Timepiece in less than 1 minute.
Finish Chapter II.
Finish Chapter I.