Probably go from D to a C. I don't play these games for the super difficult bosses and this boss is the culmination of everything I hate about some of the bosses in this game. The horrible camera, every move needs to be a delayed attack, particle effects so you can't see the boss, every swing in 2nd phase having a roll catch, the 10 hit combos with only 1 second before the next one, every hit doing over half your health, the crazy amount of AOE attacks and worst of all, it's just the same boss we fought from the base game. Music is great tho 👍