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.
Catch the unchained key in The Mirrored Courtyard.
Fall for 30 seconds.
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.
Complete The Precipice without rotating.
Finish Chapter II.
Complete The Library being no louder than a whisper.
Finish Chapter I.