I just beat this guy and I feel like there is something about boss mechanics that I am missing
am I supposed to just face tank their auto attacks and chug potions to stay alive or is there some dodge mechanic I am missing or do I need to upgrade my defensive gear? I am >10 levels below the enemy

I really love the environments and character designs, I keep forgetting there is a run button and I just walk around looking at all the cool stuff in each area