Well, it only took me around 2 years after this game (and the 360) launched to get around to playing and finishing Kameo. I am really not sure what took me so long, but I'm finally happy to report that I finished this sucker last night. First of all, I am really not sure what people's issue is when it comes to certain platformers. THIS IS NOT A KIDS GAME - not to say that it won't be enjoyed by people of all ages, but if you think it's just a dumb game for kids you are totally missing out. The various "elemental warriors" are really just a fancy way of implementing unique attacks and moves. The way this is done in the game is great, although you'll find some of the warriors pretty useless except for very specific instances in which you require their powers.
People have said this game is short - well, I didn't really find that myself. It might be because I played it in pieces, but it was definitely worth the price at launch and now that you can get it for $20 if you haven't played it, go get it! The graphics are gorgeous (even today) and other than some frustrating control issues (like most games have) and the occasional wonky camera (which ALL games of this genre have) it's a real gem. 8.0 out of 10!