I can't pass it in normal yet =( (though i don't own the game .. a friend does :P)
also the freaking song is too long .. i really get tired after a while ( and i'm in a really good shape :S )
The song is definitely of EPIC length. The first time I played it was on Hard as the end credits rolled, and I had never heard it before. Just before it gets to the middle, in the rolling triplets section, it sounds like it's going to end. Instead, it changes tempo and goes to an entirely new musical theme. I was like, holy @#$%&*! this song is awesome. :)
Was this your first encounter with Dragonforce? Lulz, I love a noob. Definitely check out Valley of the Damned, Black Winter Night, Fury of the Storm, Soldiers of the Wasteland...hell, just check out all there stuff. They only have three albums so far, lol. But those four are a good starting point. Also, check out their video for Operation Ground and Pound, though they were forced to cut some of the song for the video.
Other bands you may enjoy if you like power metal:
Though none of these are quite a speed metal as DF. BG can be a bit progressive, and IE (my favorite band) incorporates a lot of thrash, as well as some progressive elements.