Well, here goes...
I don't know much about Guitar Hero one or two, but what I do know is this: this song is good. A remix may be unoriginal, but you still end up with a 9, let me tell you why:
The Intro -
Very low, bass, and coupled with that swinging synth (that travels up and down in terms of pitch) in the background, the intro packs a punch of mystique that really gets you intrigued. The point of the intro is perfectly fulfilled. 10/10 here.
The Post-Intro Body -
The traditional techno elements (basically the notes in that configuration sound very... regular conventional techno... don't ask why :p) combined with how they are distorted makes a fresh sound based on a classic. As it begins to build up further, repeating the theme twice, it really gets the tension going. The buildup is tenable when it finally hits that warbling higher-pitched synth. 10/10
The Climax -
This part of the song is perhaps the shortest, coming right after the buildup to the second "let's go!" vox. Unfortunately, there isn't much you built up to but a faster, louder, more intense version of the post-intro body. This area needs a bit of improvement and some lengthening. 7/10.
The Denouemont -
Basically, the song just carries on and fades out abruptly. Nothing to analyze, and it barely does the trick as far as ending the song goes. This definitely need improvement, I'm afraid. Give it something with a bit more umph, to leave you feeling awestruck that the song is actually over. 6.5/10
Your overall score is around an 8.5, but being the kind person I am I will round that up to a 9 for the review. Your ending is a bit shakey, but the intro and body are very solid and well put together. Perhaps the original song is shakey at the end, perhaps not. Either way, you get a 9 from the review, and a rounded-up 5 for the vote. Very well done.