+7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
+3.5-5% Strength for 3.5s on Hit. Stacks 5 times.
Up to +14-20% Damage on Hit (Staggered Enemy), scaling with Stagger.
+5-6.5% Strength for 3.5s on Close Range Kill.
With agile engagement boosting damage and the almost guaranteed crits from weapon specialist, the Kantrael becomes closer to a revolver, but with horde clear options, excellent mixed horde and anti-boss/bulwark burn damage, fantastic stagger, and better reload -- at the cost of armor pen and higher damage at range. But the up close and instant stagger can save your team from rager packs, trappers, and more while the burn infinite cleave makes it deceptively good at dealing with ranged enemies behind hordes and the hordes themselves!
Fire Frenzy can be swapped for Man Stopper if you want great cleave on non-special attacks too, but I prefer the damage. Flechette is another option to spread a ton of bleed alongside your burn, but frankly felt too slow when tested and the burn suffices.
A good rolled rashad (check your breakpoints, but all but mobility should be 70%+ - and brutal momentum is key) and the ability to hit headshots with it are essential, as you have amazing and fast horde clear plus anti elite in a single weapon. This allows you to constantly be switching, keeping up your crit and damage buffs, while Iron Will and Shout keep you quite tanky for vet.
And of course since crushers are fire resistant, you have krak grenades for them, plus the rashad does decent damage vs them, especially with headshots.
Fun, fast, brawler playstyle that has answers to most everything!