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
Make Molly wait before you pick up the phone
Complete the story
Looked at every object in each mood
Play the guitar in each mood
Get drunk after the break-up
Have all the lights in the room turned on
Clean up in time before Molly's call
Feed Henry