Price's 'Stalwart Eviscerator' FotF
 Zealot Build - Warhammer 40k: Darktide 

Crit Evis, not much more to say than that. Use Shred so you can just spam lights at the wave for 70% crit chance, every single damage increase under the Emperors light so your Evis will do all the damage to everything. Knives for long range engagements and quick kills while holding the Evis out, and a Combat Shotgun IX mainly for varieties sake (it's not great, but the Evis deals with all your problems and knives deal with the rest, so you don't need a quality ranged weapon) along with 'dealing' with Bulwarks since you can just dump flame shots down range and even if they hit the shield, the burn still applies so you'll kill them all eventually. Also why I take Flechette over Manstopper, so such shots also apply bleed and you can dump them into Monstrosities to bleed them for Scourge quickly. 

Use heavies on anything with armor, with a FotF use as well if one's up for guaranteed one shot. Main reason I run Flak/Carapace verses Unyielding/Carapace is just to one shot maulers always regardless of crit, since you don't have things like Martyr amping your damage high enough to ignore it. One can still swap for Unyielding if they want to though, and just put Flak on the shotgun, doesn't really matter either way. 

The most 'turn your brain off' Zealot build you'll ever see, but so incredibly effective.