Interesting idea. Overall it's pretty good.
At times it seems a bit glitchy though... there were several times when it felt like what I did shouldn't have allowed me to progress, yet somehow I just sort of glootched through walls and ceilings and made it anyway. In some spots I just sort of made it through the puzzle _somehow_ and I had no idea if what I did was the solution or an accident or a glitch or what. I just sort of felt like "mmmkay... whatever, moving on."
Also there was one section where I was able to skip three rooms entirely by standing on a door and cheating a shot higher than I should have been able to (in one of the red pad rooms... in fact, the first red pad room iirc). And it seems that it's a bit forgiving when you, say, run into a ceiling or something, you just sort of slide along it for a bit and when you're clear you resume normal trajectory.
Collision issues aside though it was still interesting enough for me to play through to the end. Good job