It was a really ambitious choice to do a 3D game with such limitations, but I think you did well! The puzzles were clever and it was fun figuring out which orbs you had access to when and how to set things up for future rooms. The only part that I think fell flat was how sharply the resolution drops for things that are further away - it made it really difficult to tell which pedestal affected which door, and that led to a lot of guess and check. My only suggestion would be to potentially have a line leading from the pedestal to the door that opens. Could be a wire, could only show up when the orb is placed, something like that. Great job overall, though!