You did a pretty good job here :D
But it's a little repetitive though. I actually don't mind that, but MAYBE some people mind that.
Also I like the part you started to use the guitars. It can blend perfectly with the tunes. Is it DIST Rhythm? Or DIST Metal?
Oh, forget it.
So, in conclusion, don't make it too repetitive (if you can).
That is all :D
Keep up the good work, "FL Chan". :D