Avenger of the Fallen
 Zealot Build - Warhammer 40k: Darktide 

Atrox MK2 is what i use mainly, can be used with both knives as far as i have tested with similar results

gun is a placeholder, it's what i use on my zealot. HoboWithAShotgun requires shotgun

reasoning for momentum: better than piety and martyrdom for auric maelstroms from personal testing with almost perma-uptime on the +15% buff to damage and attack speed

Invocation of death: with shred (riposte for you knife mains) your crit chance should be constantly sitting around the 50-75% mark, resetting Fury of the Faithful very quickly which is also why i do not use the second charge

Knives for long range sniper killing plus it's the best overall path giving you Second Wind, Enduring Faith, Scourge and puts you in a good place to pickup Thy Wrath be Swift (which i personally do not use, i replace TWbS with Purge the Unclean for extra boss damage

Benediction: Until Death, Holy Revenant and duelist are RIGHT next to it, which are some of the best talents in the game because you just can't get one shot. this does NOT mean you can't get 2 shot, because you can and will

Curios: personal preference but i use stamina for more push attacks, combat ability regen for more fury uptime, stamina regen for obvious reasons and then sprint efficiency for less stamina wasted on sprints, more for push attacks. 

NOTES: this build excels at dismantling gunner lines (PUSH THE GUNNER LINE!!!11!111!), close range survivability, boss damage, horde clear and specialist elimination. it struggles when it comes to dealing with more than like 3 crushers at once as well as >3 bulwarks at once