I battled my way (mostly with the controls) all the way to the end, but the experience wasn't particularly satisfying besides being able to say that I never gave up. Sometimes it's fun, but most of the time it's just tedious and even painful, trying to accomplish something that requires not only large amounts of skill, but also a nearly astronomical level of luck. The good kind, not the bad, because that's already in great supply.
I think what you have here is a really good base for a game, but it needs some serious tweaking to polish it up into something truly playable. My main concern is that most players will probably cut and run after getting their butts handed to them a mere handful of times, and considering that I probably fought the "Tricycle" boss three dozen times before finally succeeding, that doesn't bode well for anyone who gets frustrated easily.
Nevertheless, I pushed on and on and on even when all I had were expletives for the little ship-and-wrecking-ball that failed to react to my commands far too often, and while I can't offer particularly high marks for something that should be more polished, I can give you a solid 2.5 stars and a vote of 3.
As I sit here and type out my review, the mindlessly repetitive music is slowly driving me mad, so I'm going to have to leave you with that. Oh, and for the reviewer who said the Expert Player medal doesn't work, I managed to earn it with a total score of 155,215. That being said, please consider giving players a running total for all levels when adding a medal like that; adding the level scores ourselves to check is a real pain.