Really impressive game, especially for 48 hours of dev time. I had quite a lot of trouble with predicting what would happen, and especially when the spinning things came into play, I basically solved levels via random chance.
I did like the different parts that interacted with the size of the particle, and controls and animations were great.
Also, it felt like sometimes the particle bounced just off angle where it should have; i.e. as if the calculations were a bit off?