the way the guitar volume drops off at 0:12 is really unnatural, gotta let the palm and the reverb do the work there
other stuff is played pretty naturally but sounds "sampled" (not a deal breaker), there's a little triplet/3-3-2 bit at the end of each measure of that main riff though and it sounds percussive instead of strummed, like someone playing a guitar sound on a keyboard.
for the snare rolls, have you got a multisampled drumkit? the snare has that machine-gun effect in the fills, just needs some different samples of the same drum for the softer hits.
didn't really notice much else with the sequencing. pretty solid!

the other thing is that the lead guitar could probably sound more... forward i guess? it's drowning in reverb and it's pushing the solos and licks behind everything else a little bit when they should be right up front. it's giving them this cold, muffled texture as well, not sure if you wanted that. there's too much reverb in general for my taste, but i guess it's well implemented and fits the song.

this is cool power metal-ey battle music sorta stuff! once it starts it doesn't really shift gears for long, i think you could fit an extended bridge solo without drums and another repeat at the end with a big shred for the finish. NGADM-worthy!