Arbites
Block Breaks push Enemies, 15s cooldown. 15-30% Block Cost.
10-25% Rending vs Staggered Enemies.
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.
This build will make you UNSTOPPABLE, so you can pretty much use whatever weapons you like. I like to have a shield on in some capacity, so I'll use the shot pistol and shield if I use a non-shield melee weapon.