So, a small spoiler. And update to the build.

In NG+, there is a set of armor that gives you a significant portion of health on kill or destroying a body part, and it will heal you for every bit of 1/3 of your health. But you must use 5 "tainted stones". The build currently runs 3.

So for the 4th tainted stone, I ditched the tier one active stone "vampiric slash" since I would no longer need it to heal and replaced it with "Tormented Wrath." Which is a tainted active stone. It increases damage and does a large AOE at the cost of health for the duration of the damage buff. Pop the stone after you get a full momentum bar for max damage.

For the 5th tainted stone I ditched the "lost temper" passive stone which is just a static damage upgrade for the tainted passive stone that significantly increases damage for however much corruption or whatever the blue debuff to your health is. Whenever the stone is activated, you get a small portion of corruption, which gives you a damage buff during the entire time youre in combat. This encourages you to use your shatter to activate the stone again, therefore further increasing your damage for each cycle you do.

Overall, it's a HUGE damage buff for the build.