Not too bad.
I really enjoyed the beginning, and the high pitched synth that carries the melody of the piece has an interesting tune. The bass beat worked well throughout. I also liked how you handled the ending, choosing not to use a simple fade out. Overall it's a pretty decent song, one of your better ones for sure. I was, however, disappointed because it all seemed like it was building up to some epic fast paced section, but one never really came. Maybe that's something that could be added in a future version of the song.