Here is the full list of all 28 Examination Chambers achievements.
You successfully completed all rooms.
Number of rooms solved.
Achieved all achievements.
Completed the first room.
Completed the second room.
Completed the third room.
Completed the fourth room.
Completed the most important room.
Completed the sixth room.
Completed the seventh room.
Completed the eighth room.
Completed the ninth room.
Completed the tenth room.
Completed the eleventh room.
Completed the twelfth room.
Cheekily skipped a room.
Completed the fourteenth room.
Completed the fifteenth room.
Completed the final room.
Tried to damage a camera with a cube.
Hitted a speaker with a cube.
Enabled Party Mode.
Stood on a button that is designed to accommodate cubes only.
Found the favorite cube of Mark.
Solved a puzzle just by looking at it.
Looked out of the crack in the wall.
Put your head in the cube container in the eleventh room.
Entered the first room.