Hitting at least 3 enemies with an attack, restores 12-15% toughness.
Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
14-20% Strength for 5s when every pellet in a shot hits the same enemy.
Up to 14-20% Damage on Hit (Staggered Enemy), scaling with Stagger.
True monster of a build
Use "F" when facing heavy armor targets like crushers. You can take them down with the shotgun or another neat thing is activating your ability while you started sawing into them, that can kill a crusher in one hit.
Other than that, have fun with it!