Zealot Gunman
 Zealot Build - Warhammer 40k: Darktide 

This is a ranged/balanced build I created. The Columnus Mark V is really strong right now, especially with the traits selected above. You can quite literally use this gun to clear a horde, as long as you're aiming at heads. This gun is also great at killing off specials and certain elites due to the superb weaskpot damage the IAGs give. This gun also has a gernous ammo pool, so you can blaze away for days. Fire nades can help soften targets so that you can quickly kill them off with this gun. Perk choices are up to you---what do you want to kill faster?

For the melee weapon, the crusher has superb damage, and it's a great all around mallet weapon. The strikedown heavy attack deals hefty damage against all enemes. Skullcrusher is mandatory since it's the only damage blessing the crusher can get; skullcrusher can alao increase the damage your teammates dish out against a staggreed enemies. Any other blessings and perks are up to your own personal preference.

For curios, stamina regen and sniper and gunner resitance are my personal preferences. Choose what feels good for you. I like toughness since it's great at absorbing ranged damage. 

As for Shroudfield, I'd advise you to pop it when elites or specials are nearby. Once you pop it, use the crusher's special heavy to deal heavy damage against enemies. Pious Cut-Throat can help you regen your ult. 

This is an overall balanced build. Just try not to pop Holy Revenant frequently due to its 120 second cooldown (it was fine at 90 before imho). Have fun with this build.