Pretty good, tested well
This reminded me of the early 3D polygon games back in the 90's. Surreal feel to it. Challenging, but not impossible. I'm glad it seems ghost mode was user tested well. It wasn't impossible. Cam 22 just gave me a bit of trouble until I realized I could circle around the ghost once while the platform arrived to the door. I was actually expecting ghost mode to mean the character was invisible... I'd have said, "screw that," if that were the case.
Pretty good game, feel and concept. Now I just need to go back and find the rest of the orbs.