I had a lot of fun with Mr. You!!! On Ice! The premise is a great interpretation of the theme, and I'm a sucker for games with a pick-one-of-three upgrade system. I also really like Mr. You's design - he's very cute. The basic enemy attack patterns were easy to understand and deal with individually, but having to deal with several at once was a fun challenge, especially on slippery ice.
That said, I think the game could significantly improve if you toned down the acceleration from being pushed around by your own quills and reduced the size of the rink. I found that the main source of difficulty was dealing with red balloons, because I could comfortably snipe blue and green balloons from almost anywhere by just clicking on their off-screen indicator arrows (a very nice touch, btw). Most of my losses happened because I tried to shoot a charging red balloon too close to the edge, which felt like I had no choice but to unalive myself.