7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
Up to 5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
1-4% Toughness 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.
Based on two builds called "Twin Killer" and "Shovel Master" with my personal preferences added.
While Shovel Master can onehit Crushers, this Build can twohit Crushers and become way more tanky than Shovel master, perfect for the twins boss without sacrificing the fun of doing massive damage with the shovel.