After playing the game again I understood what you meant when you made we jump the levels when we don't complete them. It really makes the achievements harder to get! And this game is really addictive!
I agree with opiatejake about the speed of the ball. And as condot said, we shouldn't jump the level when we are out of lives. But the idea of the game is great and i give it 4/5. If you work on these things it will deserve 5/5.