Beltfed Buckshot (With Dog)
 Arbites Build - Warhammer 40k: Darktide 

With the update to Blessed Armament in Beyond the Hive, Castigator's Stance, once capable of giving the Arbites access to a quad barrel shotgun, is now capable of delivering the will of the Lex Imperialis in as much buckshot as you can carry without reloading. With the cooldown rate on this build you're pretty free to pop CS whenever you have it, but if you hear a horde coming you might want to save it for the fun part of this build. The taxe is fantastic on single target and with your crit bonuses active you can brainlessly spam light attacks like a chimpanzee and save your mental load for dodging. If you ever need a cardinal direction's worth of chaff enemies to stop existing (especially effective in chokepoints), just pull out your old reliable beltfed double barrel and erase mixed hordes from memory. So long as you keep getting kills on each shot nothing but death can stop you with CS active, and having three in the chamber to start with means you get three "freebies," either missed or non-kill shots, before having to reload like a neanderthal. With this dog version, you trade some boss damage and shock mines for the imperium of man's best friend.  You might have better luck with the more controlled fire rate of the combat shotgun, but for me personally the double barrel's rate of fire is just too funny to pass up.