10-25% Strength (next 3 attacks) on Weapon Special attack Hit.
5-8% Strength for 4.5s on Kill. Stacks 5 times.
4.25-5% Strength for every Enemy you Stagger. Stacks 5 times.
7-10% Strength for every 1 Single Target Hits. Lasts 2s and Stacks 5 times.
Fun alternative build when OP Skullbreaker gets a little stale, emphasizing light spam for hordes and PBB for elite packs. When built properly, the single stubbers hilariously outperform their twin-linked counterparts in basically every way: faster reload and brace times, more accurate, more mobile, less recoil, more ammo efficient, and more dps. You could build for crits using the twin Achlys but it still falls short to the single Krourk. Range is the dump stat because you don't lose much damage at 60 while Collateral benefits Pinning Fire.
The single stubbers don't crit chain so any crit rate/damage boost won't be good.