The high overtones in the intro are a bit jarring to the ears, maybe cut some of them out with an equalizer. Melodies could use some work just to get them to flow a bit better and make them more memorable. As far as mixing, it's done alright. The saw chords do sound nice and the drums don't interfere with the synths which don't interfere with each other much. Overall it just lacks motion in mix and melody, making it a mite monotonous.