So I ordered the game, came in yesterday, beat it today. Nice game to finish out 09.
I really enjoyed the blown-up enemy mechanic. Simple at first but they managed to get a lot of variety out of it. Being able to interact with items in front of and behind the main path and having the path move around in 3D space were pretty fantastic too, I'd like to see that in more games. Makes the game feel less restrictive than I sometimes find side-scrolling games.
In general the enemies don't put up any challenge(though I don't' feel they were exactly meant to), but I did find some spots a bit tricky platforming-wise. Environments looked great, especially the few with water. Story was cute, but I actually found the English VA more annoying than the Phantomile one and changed to it after a few levels. It is a bit short, but that didn't bother me. One of the few games this year I think I may go back and try to complete more of (I believe a Time Attack mode unlocked?).
I ended up playing with the Gamecube controller at first, but changed to the Horizontal Wii Remote after the first 2 areas. First time I have played much of any game with just the Wii Remote, and I really liked it.
Ordered the second as soon as I finished. Can't wait to play it.