Meta Zealot
 Zealot Build - Warhammer 40k: Darktide 

This build specializes on dancing between targets and steam rolling anything in front of you. You should be able to carry without much issue with this build, even in Havoc 40.

The knife is for taking down elites mainly, however it still does good damage against bosses. You can kill a Plague Ogryn in ~30 seconds with optimal play. The flamer is used for when things get a bit crowded, you can spray into a horde and it will melt anything smaller than a Mauler with its alt-fire.

IT CANNOT KILL MAULERS(quickly) OR CRUSHERS WITHOUT PENETRATING FLAME SO DON'T TRY IT

You can run Penetrating Flame on the flamer but its really not worth it unless you're playing Scab faction only.

Some talents can be switched around for personal preference. The Zealot has a ton of quality talents but if you want bread and butter Zealot, this is the build. At the end of the day play what you want to play, there is no build that isn't viable even in Damnation for most players. Play what lets you have fun and don't grief!

-----------------------Option 1-----------------------

Dueling Sword Mark 4

Dump Mobility

Take Uncanny Strike/Riposte and Precognition

Slot in Carapace/Unyielding

The Dueling Sword performs 1 to 1 with the knife, substituting some dps for safety.

Bolter Mark 3 or 3b

Dump Mobility

Take Pinning Fire/Puncture and Shattering Impact

Slot Carapace/Unyielding

The Bolter is your go-to weapon for clearing big targets. If your build requires a bit more dps, give this a try. Just be careful about its handling and reload, its a slow weapon and you can be caught off guard if you're not vigilant.

IF TAKING THE BOLTER SWAP SECOND WIND WITH DANCE OF DEATH

-----------------------Option 2-----------------------

Relic Blade Mark 2 or 10

Dump Mobility

Take Heat Sink/Cranial Grounding and Rampage

Slot Maniac/Carapace

The Relic Blade is an amazing all rounder weapon with just one flaw; mobility. Be sure to take a revolver or bolt pistol to balance this weapon out when you need to get away from the horde. 

The blessings are personal preference, I enjoy Heat Sink as I find myself using the powered up mode a LOT and this extends my time by a ton. Cranial Grounding will as well, but it is harder to use and only extends it for half the time, though that weak spot damage boost is nice if you can reliably keep up the stacks.

Zarona Mark 2a 

Dump Mobility

Take Surgical/Handcannon

Slot Carapace/Maniac

Still the best specialist and elite sniping tool the Zealot has alongside Blades of Faith, this gun fits perfectly with the Relic Blade. It can reliably 3 to 4 shot Crushers when needed as well, and can dish out decent boss damage. Just watch that ammo count.

IF TAKING THE ZARONA REVOLVER YOU SHOULD SWAP BLADES OF FAITH WITH IMMOLATION GRENADES OR STUNSTORM GRENADES