Skull Crusher
 Arbites Build - Warhammer 40k: Darktide 

Made this custom build while I was progressing through the game with this class, honestly the most fun I had.

Ranged damage is good, the weapon can oneshot almost every ranged enemy, Reaper excluded but it takes them down in 2-3 shots, you gain a lot of reload speed from the passive tree as well.

Melee weapon, just the best, I've enjoyed this mace so much, great for clearing hords, staggeres enemies left end right amplifying the damage, great for creating breathing rooms, and it gets a lot of damage and attack speed from the passive tree.

Granades. meh, maybe the drawback because you have to refill them yourself, but I use them for cluch and to stagger enemies when they are closely packed together, mostly reserved for ranged enemies, shotgunners, gunners... Not the best damage, but they can take care of lightly armored enemies and provide some extra space.

Ability - Break the line, smash into a hord of enemies for a brutal stagger, can disrupt that horde of Crushers, Bullwarks, Ragers, Maulers etc... Knocking them on their asses for some easy picking, ability is also on low cooldown and it does wonders with a concentration stim.

Mastiff, a very big help in my opinion, it prioritizes ranged elites/specialists, knocks down enemies when it pounces, staggeres mutants and enemy ogrins, the skill tree gives it much needed power, overall it has saved me more times than I can remember.