Veteran
45-60% Finesse Damage for 2s on successful Dodge.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
3-6 Bleed Stacks on Critical Hit.
Increased Cleave on Critical Hit and gain 10-25% Ranged Attack Stagger.
The Maccabian Mk IV Duelling Sword is a great melee weapon (for now). With the right setup and a crit weakspot hit, you can one-shot Crusher and Reaper and hit Monstrosities for big chunks. Where it is slightly less good is horde clear. Because of Weapons Specialist and Always Prepared, you'll always have a shell in the Crucis Mk XI Double-Barrelled Shotgun's chamber (as long as you've gotten a melee kill). This, the guaranteed crit at 3 stacks of Ranged Specialist, and the extra cleave from Man-Stopper make the Crucis Mk XI Double-Barrelled Shotgun's horde clear even better than it normally is; Flechette is then applied to any enemies not outright killed, helping kill a few more. So you can take care of any single or scattered enemies up close with the Maccabian Mk IV Duelling Sword, any larger groups or ranged specialists with the Crucis Mk XI Double-Barrelled Shotgun, and have Infiltrate for a panic button or to take care of objectives and revives.
There's probably a case to be made for dumping Reload Speed instead of Mobility for the Shotgun since your reloads will mostly come from Always Prepared, but I haven't experimented with it. It's a bit of a meme build, but it sure is fun.