Absolutely love the combination of acoustic instruments and dubsteppy/electronic stuff in here. It makes the song feel very unique in terms of atmosphere and just general feel. The phases were really interesting and provided something special each, and the transitions between each phase were done perfectly as well. The song never felt stagnant and instead felt like it was constantly moving. The mixing was also very well done. Keep up the awesome work!

Okay, so my feedback... the first two minutes sound good and are definitely your style, but I hesitate to say they necessarily fit as a hero's theme specifically. Later on, there's a handful of REALLY short instances that I think were a bit too empty (and again, like I said, not long at all; only one beat long or so... such gaps aren't inherently bad, of course, but I don't know that they were appropriate at the particular moment). I also noticed something odd in the panning of what sounded like an electric guitar, but that could just be my headphones acting up.
Otherwise though, pretty good! I almost see this as approaching a vein of "what if Xtrullor made electro instead of dubstep" in some aspects.

Some parts sound kinda familiar, but I have no clue what do they remind me of... Sick, definitely worth the time spent on it, I love this!