This was fantastic! Loved all the juice, the way you introduce new mechanics and the smooth level progression (except for the last level, which felt like a pretty big jump in difficulty :p). The screenshake, trail on the ball and everything is really clean and fits together well! The level design was also great and I'd love some even harder levels!
One major thing though is that I really wish there were a line like in Peggle that shows your initial trajectory but not the bounces, since the harder levels require you to be consistent over multiple shots and small variations in the angle lead to very different trajectories. The last level in particular I had a good set up but had a lot of trouble aiming it consistently which was frustrating and a line to see the initial trajectory would have helped a lot!