Already put in another thread, but I'll put it here too for anyone who wants other OP build options. Replayed with Bloodfiend's Arm, these were the result's vs. final boss.
Used cragblade ash of war infused with blood on Bloodfiend's Arm, damage softcap is arcane 80, strength 54, recommend at least arcane 60 and strength 40. Talisman's; axe talisman, lord of blood's exultation, blade of mercy, and two handed sword talisman.. Flask tears; stonebarb crack tear and greenburst crystal tear. Can also trade axe talisman and greenburst for damage negation stuff if need be. Bleed proc and stagger with its R2 is insane.
It's also just a good bonking weapon.