Hmmm interesting... I have to say I like the main theme. It has a nice dark mood. I think some variations here and there would prevent it from getting to repitative after a while. When the drums start actually I have to regret I was completely surprised because they appear like they are not really in sync with the rest of the track... It´s nice that you are trying to be experimental with the percussion but in this case it just sounds as if something is wrong... Maybe check if you can quantisize this part? Later when the full beat starts it´s getting better. Also the drums in general (especially this "metal percussion thingy") are a bit loud in the mix washing out the rest of the instruments. The change towards middle is nice but if you would give the lead a bit more "punch" I think this would really suit this track. Anyway... Nice track with neat ideas which has some production flaws and could use a bit more variation at the beginning. Hope this was helpful since this isn´t really my genre...