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.
Feed Henry
Have all the lights in the room turned on
Get drunk after the break-up
Choose to leave the room after break-up
Hook up with a girl using the dating app
Clean up in time before Molly's call
Play the guitar in each mood
Complete the story
Looked at every object in each mood
Make Molly wait before you pick up the phone