Here is the full list of all 11 House on the Hill achievements.
You decided to finish what you started.
Complete the game.
You decided to take a deal in order to save your family.
The thief found out about his past and its consequences.
The thief has looked beyond the edge.
The thief discovered what happened with an artist.
The thief took picture of a 10 paintings.
The thief survived an encounter with a mad man.
The thief has died for the first time.
The thief has left. Smart move.
The thief is ready for the job.