This is really great! Like the first one, it has those really clean simple graphics, and builds on the original concept really well. It pretty much fixed all the issues with the first one, being that it was too short and too easy. The physics are nice and crisp, and generally the concept was super intuitive. Every level was something new. Overall the only things I'd suggest are:
1.lowering the amount of clicks on SOME levels, since some are possible to beat in less. Definitely not worth rating down for though.
2. There's a bug where when I exit to the menu then come back to the level select, the last level shows as being uncompleted. Also not a big deal.
Nice work!