Wonderful remix. This song conveys a sense of grandeur and foreboding without resorting to chaos or sheer volume. It gives great inspiration and imagery for a flash movie. That constant string orchestra really carries the song. And even if the song goes completely silent at points, the silence has a definate place. The extra snap to those drums is appreciated as well.
The only potential fault with this I could find is that the song sounds generally the same the whole way through....though seeing as the song sounds good through the whole piece, this isn't as big an issue as it would be for other works. It would probably be very difficult to change this though, considering the original song was also singular in nature. I don't know why, but I feel like I hear some Star Fox Adventures music added to this. I wonder if it might have been inspired by Zelda muic too though. (I think it was in one of the mines.)
Nevertheless, it's one of the best Pokemon remixes I've heard. Kudos to you!