Amazing. The game seems hard at first glance, but once you get acquainted with the controls, it's actually very easy, albeit still very challenging. It's weird that this game isn't more popular, and has so little views, considering it was frontpaged (rightfully so), and has very attractive graphics and gameplay. There were some minor bugs, mostly in chapter 2, where my character was pushed out of playable area, and I had to restart from the last save, but it wasn't a big deal.
Of course, I could further compliment graphics, sound, and whatsnot, but I think that me giving this game full score says everything l I think about these aspects. Pure perfection.
For medal hunters:
Finding the gnomes was the hardest thing to do. Hint: each Chapter has 3 gnomes, 1 per level. In Chapter 2, there are NO gnomes in level 1 (chapter 2 is also the longest, as it has 4 puzzle levels).
In regards to other medals, don't worry if you don't get them during your first play, because after beating the game, and forgiving the bear, you can replay the game as the bear itself, and easily get the remaining medals, especially 50x combo and 2,5 million score.