Here is the full list of all 10 Thing-in-Itself achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Choose to leave the room after break-up
Hook up with a girl using the dating app
Complete the story
Looked at every object in each mood
Play the guitar in each mood
Get drunk after the break-up
Make Molly wait before you pick up the phone
Clean up in time before Molly's call
Have all the lights in the room turned on
Feed Henry