Nicely done and a very simple piece that seems to build from start to end. Has the grandiose type feel of a hero entering a fight to take on the big baddy haha.
I think my only take is that sometimes the drums seem to get slightly pushed back (quiet) in the mix on the parts where the guitar does the long drawn out power chords, but that's definitely not something that's going to be noticeable to the average listener.
Overall, good job!