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 left. Smart move.
The thief survived an encounter with a mad man.
The thief has died for the first time.
The thief discovered what happened with an artist.
The thief took picture of a 10 paintings.
The thief has looked beyond the edge.
The thief is ready for the job.