Sounds like you've got stuff mixed pretty well here. The transition at 12 seconds is cool.
It doesn't breathe a whole lot and everything is just sort of congested and super steady. I suppose it is typical of heavy chugga sorta tunes, and it appears that you want it to be like this (and you accomplished it, so nice job there), but I'd be curious how this might sound without everything super clipped/compressed/controlled/limited/etc.
Since I'm guessing that you want it this way, I'm not sure what benefit such an obvious observation is I guess. I've just always wanted to hear more dynamics and life to this sort of thing.