Paused Solution

While the game is paused the world is displayed in wireframe.
This should allow you to see things normally hidden by walls which point toward the correct decision.

more detailed room solutions below:
































(note: room order in game is random)
Room with only three buttons: When paused you can see a circle or X in the wall behind each button, the one with the circle is the correct choice.

Hallway: When paused you can see an arrow at the split in the path pointing in the correct direction. You should also be able to see the end of each path from the start of the room while paused.

Room with three buttons and a shape in the middle: The shape in the middle of the room will match with one of the shapes hidden behind each button, which can be seen by pausing.