This is one of my favorites to play, I'll often play this for fans as I pop into their games. The Rush of Battle (at the end of Maximum Carnage - Level here http://lbp.me/v/xnbyvw , song here http://www.youtube.com/watch?v=7iGNq2jlet0 )
The two main riffs to the song are pretty simple to play. Tempo about 180 bpm, the beginning starts in E minor like so:
That goes twice and then it switches to A Minor like so: (just move up a string!)
Then it goes into my favorite riff in the song, starts on a D:
This plays 3 times and then:
And then we just start the whole thing off of an E!
This 3 times again, and then:
And those are the two basic riffs to the song!