ZeCrit
 Zealot Build - Warhammer 40k: Darktide 

ZeCrit Zealot is all about more crits for more damage, and near infinite toughness. You will have a max of 85% crit chance when everything is stacked.

Evicerator - 
 

Perks:

• Crit Chance - Helps to build your stacks faster after they fall off. Your Heavy specials do massive damage to Monsters, Unyielding is still a decent option here particularly on Monster Maelstrom (don't need it for Bulwark or Reaper oneshots). You can already one shot all Maniac enemies except ragers without even using special (heavy special will annihilate Ragers)
• Elite - Lets you one shot head shot Scab ragers on heavy attacks, Maulers on heavy special, and crits will nearly one shot Crushers. Carapace allows for Crusher one shots without using Ult.

Blessings:

• Shred - More crits for stacking buffs, and this weapon had a good crit modifier so this also helps increase damage
• Rampage - More power is more fun. Since Light attacks have a cap of 4 enemies hit, cleave options are not ideal - Perfect Strike is okay as it will let you cleave through Bulwark shields and Crushers to clear enemies around them.
   

Revolver - One of the best ranged weapons, particularly with +crit. critical hits will one shot almost any special and elite and Blazing Piety increases ranged criticals as well.  Heavy Laspistol also can stack Piety, and benefit from more crit chance - great boss killer. Autogun MK V is another great crit stacking weapon.

Perks:

• Unyeilding - Helps to hit 3 shot head shot on Reapers, Elite is fine for helping with melee elite units. Don't need Flak as crits will already body shot all ranged elites.
• Maniac - Helps to kill Mutants, not necessary for headshot crits, but if you don't get crits it will assist in 2 shot breakpoints. Can replaced with Carapace.

Blessings:

• Surgical - Grants Critical strike rapidly, once Blazing Piety is stacked you only need 2-3 surgical stacks before your crit hits are very consistent.
• Handcannon - 80% rending gives 20% damage even to non-armored units, and will let you 4 shot head shot crushers.

Benediction Stacking this with Enduring Faith for 50%~ toughness damage reduction that you will always have on so long as you are hitting, or shooting something. Duellist does work, tool tip simply doesn't show. Push attack on Evic is wonderful, abuse it and then get a huge damage boost from Desperation, Push attack chains into Light 3 for good horde clearing power try to drain stam before using Ult and getting attack steroid. Since New Evis push attack is a single target option, don't use Desperation unless using the old Evis.

Fury of the Faithful Gives a guaranteed crit so you can quickly start getting all your stacks, replenishes your toughess as you are very squishy once that is gone - always save one charge for things like when you get hit by fire, or Sniper round draining your toughness using Redoubled Zeal.

Blazing Piety - Lasts 8 seconds, gives 25% crit strike chance with Righteous Warrior and refreshes on crit so once it is going it will stay going. this plus Shred (20%) Scourge (30%) and your base 5% Archetype modifier means you will almost always crit. 80% crit with Invocation of death means your ult should almost always be up in a horde, and can always be used to replenish your toughness in emergencies.

Heavy Attacks (mostly relevent for old Evis)
It should be noted weaving in heavy1-light2 or heavy1 - push attack combos are worse for horde clearing than push -light 3 by about 10%, and worse than just light spam by around 20% as Light 2-3 have almost as much cleave and virtually identical damage to heavy 1 while being much faster, particularly with ult going. 
        **this is because attack speed mostly (or possibly only) affects the actual attack animation, the more attack speed you have the less efficient push and heavy attacks become.