+5-8 Bleed Stacks on Critical Hit.
+52.5-60% Weak Spot Damage (Enemies with Bleed Stacks).
Primary Attack ignores 30-60% Stagger Resistance on Burning Enemies, as well as dealing +30-45% Impact.
Up to +2-5% Strength, scaling with remaining Ammunition. Stacks 5 times.
Knife perks can be whatever really. Blessings for Flesh Tearer can be replaced with Lacerate for an easier stacking bleed.
Flamer perks can also be whatever as well. Blessing for Overpressure can be replaced with Blaze Away.
Curios should be 20-21% Max Health for maximum raw survival. Toughness comes from talent nodes and Chorus refill.
Talent trees go as shown
Chorus is the Ability and what this build revolves around, reducing the ability downtime for maximum usage.
Flamer is the weapon of choice for my liking of horde clear and the knife is for single targets and bosses (Even Beast of Nurgle from behind.) Flamer can be swapped for Revolver and Knife for MK 9 Heavy Sword.