2.5-4% Bonus Critical Chance on Chained Hit. Stacks 5 times.
Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
Target receives 1-4 Stacks of 2.5% Brittleness on direct projectile hit. Debuff lasts for 5 seconds and can have a maximum of 16 stacks.
Ranged hits add 1-4 stacks of bleed to enemies.
This build is designed around the Devil's Claw parry special. Bolter is mainly for killing crushers and maulers since the Claw is weak against them; it can also be used for boss DPS. Throwing knives or melee should be used to pick off specialists and gunners when possible, since the Bolter is slow and this version isn't optimized for sniping.
Block efficiency perk was chosen on curios to reduce the stamina cost of parrying, but you can replace those with +5% toughness or whatever if you prefer.
You can optionally take Dance of Death -> Thy Wrath Be Swift instead of Annoint in Blood -> Purge the Unclean for a more defensive build.