Here is the full list of all 16 Shady Part of Me achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Do not rewind during the 5th scene of the backstage
Earn all achievements
Finish the story.
Ornithologist on paper
Gather all origamis in act 4.
Finish act 3.
Gather all origamis in act 3.
Take a moment to breathe when advised to.
After you! No, after you!
Gather all origamis in act 2.
Finish act 2.
Gather all origamis in act 1.
Get all origamis in the introduction
Fnish act 1
Hear The Other for the first time.
Finish the exposition.