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
Gather all origamis in act 3.
Ornithologist on paper
Gather all origamis in act 4.
Gather all origamis in act 2.
Take a moment to breathe when advised to.
Gather all origamis in act 1.
Finish the story.
Finish act 3.
Finish act 2.
Fnish act 1
After you! No, after you!
Hear The Other for the first time.
Finish the exposition.
Get all origamis in the introduction