Not really a halo remix, unless I'm mistaken they shuffled the chords (octaves?) around, so it was basically a new song with someone else's chords... I think.
Anyways, it has potential, but the lyrics were really not to my liking, sounded like a big self promotion (and made singer seem really cocky lol), you have to write lyrics that you feel strongly about but other people can still relate to. And get your buddies to check out some material on song structure (bridge, chorus, verse etc etc).
I kept trying to listen to it, but the lyrics just really pissed me off. It made him sound like a cocky high school kid rapping about parents hating on him, and how he was just so sick. REALLY pissed me off. Kid has no problems.
Anyways, fix the lyrics, and figure out what chords/octaves those are, then actually sing along next time hahaha. Not bad though.