Drums and Rhythm are fairly muddy, maybe open them up with EQ and compression. Vocal and leads are great.
As far as the quality...I agree with PCP on that one and drums need to come up. I really dig the music and guitar playing, cool riffs. Not my thing vocally, so I'm not much of a judge, sounds consistent with that style as far as I've heard it.

Collaborating long distance huh? Cool..seeing more and more of that these days. Musicians without borders!