For people who just to beat him, doesn't matter the means. It's doable even at low Scadutree level, just requires a bit more of attention.
Big shield + Damage negation + Blood Spear.
It makes the fight 10x easier, you do it if you want to. But it's way more enjoyable to try and beat him with your favorite weapon, and it's the last DLC main boss fight so it's worth.