Here is the full list of all 10 Room 817: Director's Cut achievements.
Solve the puzzle with the cell
Solve the puzzle with the steam valves
Solve the puzzle with the electrical panel
Solve the puzzle with the painting
Open the door with four locks
Find a way to open the door to the secret room
Find a way to destroy the Heart of the Ancient One
Solve the puzzle in the sanctuary
Find a way out
Find a way to die