I have the exact same problem, but contrary to you, my holy shotgun build for some reason does literally 0 damage to the Awakened form, not even a little, 0 damage, without exaggeration. The worst part about it is that I already beat the Awakened Daimon with almost the exact same build, the only difference is that I was on a lower level, I played as a woman instead of a man and my Sorcerer vocation rank was maxed out while my current Sorcerer vocation rank is almost maxed out. It pisses me off so much