+7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
+5-8% toughness on Chained Hit.
+5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
+7-10% Strength for every 4 Single Target Hits. Lasts 2s and Stacks 5 times.
Ogryn Hard Mode Twins build. Primary damage dealer to bosses but needs support from teammates to keep adds off his back while he does his thing. Frag bomb is used for waves of elite spawns after gas phases. Recommend to have two of these guys in a premade party, splitting damage between Rodin and Rinda while shields are up and then focusing Rodin while shields are down.
Pop PBB whenever the bosses exist, don't use it otherwise. Ideally you should drop the ammo crate here with Field Improv, but don't use it yet. 10-15 seconds after the first gas phase ends, throw a frag bomb to knock down the huge wave of elites, then start shooting the bosses again. Resupply after second gas phase and repeat until Rodin is dead, then just DPS Rinda.
If your team cannot deal with shooter mobs that spawn, block them with your shield to taunt them and force them into melee. Push enemies that are attacking teammates in trouble to peel aggro off of them if need be. Your huge amounts of stagger and cleave will help pave way between safe zones in gas phases.