This is a really solid entry.
The game was really fun, but some levels were really evil =)))
The art was really nice, everything fitted nicely, and the particle explosions really did something.
The audio was also a good addition, one thing I would suggest though is to be careful when you adjust the volumes of the instruments. As for the presentation and use of the limitation, the fact that you integrated the menu into the game itself was amazing, it was a really smart choice.