Not bad.
The bass "dududu" thing was a nice touch. But, the sudden drop in bpm toward the middle threw me off. Though aside from that it sounds pretty cool. Maybe try keeping it more consistant throughout the song. A central melody might be nice... longer songs that dont feature melody are recognized as repetitive easily. This track reminds me of early sonic mayhem (quake games soundtracks)... and the style reminds me of old mortal kombat tunes.
Worth a listen or two. Keep it up.