Nice gameplay! I liked the different types of challenge.
The rotators with 2 holes seemed buggy though, sometimes the ball would go through the holes without triggering the score. And sometimes the character would throw the ball way off the point I aimed at.
There could have been more sound effects, when picking up the ball and throwing it, and when the ball bounces off surfaces. Some music would have been nice, too. And a victory after clearing all the holes.