Alright, dear patrons, let's go further!
For my opinion, it was one of my failed remixes. I mean the tension of such tracks should be much more than I did and, actually, using not real guitars turned this track into thin and weak thing.
So for the album version the most and first-of-all upgrade was certainly using the real guitar as well as less "crispy-kick-in-your-face" EDM-style mixing but more meaty and heavy sound.
I really should've remixed Firebreath one of the last in my UT99 list, nevertheless, I've got a second chance with it now xD