This is certainly a unique song. I can honestly say that I have never heard anything like this before. That's a really good thing so don't worry! :)
The introduction is very melodious and relaxing in a sense. I'm really digging that space-like vibe that the synth gives off. When that heavy percussion kicks in though...let me tell you it was like a kick in the face. I wasn't expecting it at all. The element of surprise works well in this song and there are number of times that you catch me off guard. For example, around 1:22 there is a synth that surprised me. I have to mention though that you should try turning that particular instrument down a little and maybe add a bit of reverb to it so that it takes away some of the grungy edginess (unless that's what you were going for...in which case it works really well).
The 'screams' that slowly make their way into the song are a little unsettling for me, but considering the theme you were going for of power and struggle through battle, it is extraordinarily effective because it gives me a sense of primal fear.
I really like it how you break up the percussion throughout the body of the song. It emulates the tide of battle and destruction which in turn pumps up your musical adrenaline!
Overall I think this is an interesting piece that certainly boasts your unique compositional style. It has an edgy yet catchy feel to it that is hard to shake off after listening! Keep up the great work! I'll be looking for your next piece! :)
Neon-Bard