Continuously chaining more than 2 attacks gives 2-5% Power. Stacks 10 times.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
5-6.5% Strength for 5s on Close Range Kill.
Suppress Enemies within 5-8 Radius on Close Range Kill.
This build reloads 1 bullet (out of 2) after every melee kill (it displays 0/2 or 1/2 ammo until you switch to the shotgun).
To clear hordes of any kind, just spam a mixture of light and heavy melee attacks and aim for weakspots until you kill one enemy, then switch to the shotgun, shoot once, switch to melee, kill at least one enemy and repeat. Very ADHD, very Zealot.
In case of emergency: just scream at the enemies to scare them off.
In case of 20 Bulwarks and 30 Crushers: Krak.
Optional build variation:
Take away "For The Emperor", "Tactical Awareness" and "Iron Will" and use them on "Grenade Tinkerer", "Field Improvisation" and "Toughness Boost Medium"
+
Curios: switch "Stamina Regeneration" and/or "Block Cost Reduction" for "+5% Toughness" to gain more overall toughness.