Good start. I’d recommend dropping the Backbreaker for Annihilation, first of all. Second, we need to see your modules - Your heat and energy stats are low, but we can’t see why (it could just be un-upgraded stuff). Finally, drop those power bottoms, they don’t go to mythical. Iron Boots will serve you much better, or rolling beasts if you’re lucky enough to have them. As far as the Desert Fury goes… A Night Eagle usually works better, but its not such a big deal since the two nightfalls will do 90% of your work for you.
Additionally, Avenger is honestly a bad torso. It may have good hp, but its other stats are pure crap. Go for Zarkares (best) or Wendigo (still good) and you’ll see a definite increase in effectiveness.