The Inspector - Castigator Detective Build
 Arbites Build - Warhammer 40k: Darktide 

Well rounded Detective Hound build - "I see he's fighting 'til the end, That's what I call a good friend"

• Arbites Maul is great for mixed hordes using the push attack into wide cleave heavy swings, perfect with Drive them Back and Weight of the Lex. Proc High Voltage easily with the weapons special well as your bois Voltaic Mandibles Augment 
• Revolver is the detective special. Great for gunners and even armor, provided you pace your shots to build up Surgical, only 1 or 2 stacks are necessary tho with Efficient Killer and Zealous Dedication helping out. Quick reloads also with Judicious Efficiency.
• Lightning dog or Kommisar Rex to his friends is great to disrupt and to deal with ranged foes when low on bullets. He doesn't need a warrant to bite first with solid Boss damage between the dog and your revolver thanks to Keeping Protocol and Monstrosity Hunter. Chaos Spawn's are just big meatball who thought they could outrun a good boi.
• Castigators Stance is a solid defensive ability in rough situations. Every episode's got that moment where the partner's cornered before Rex comes crashing through the door, this is that button.