Classic Zealot build to win Havoc 40
 Zealot Build - Warhammer 40k: Darktide 

Here is the build with which I have the best win rate in Havoc 40. I honestly think it's one of the very best builds in the game for Havoc and it doesn't even require you to be insanely good at the game to work with it.

Your team utility is huge:
- 60% dmg reduction to anyone who starts taking dmg with a 8s cooldown thanks to Shield of Contempt 
- corruption resistance thanks to Beacon of Purity 
- golden toughness thanks to Chorus of Spiritual Fortitude 

Artemia Mk III Purgation Flamer will give you the satisfying kill feed filled with your name.

Maccabian Mk IV Duelling Sword gives you the ability to kill elites. Make sure to stack uncanny strike!

Use Chorus of Spiritual Fortitude anytime you see an ally lose too much toughness or to get out of sticky situations. You can also use it to push into a room full of gunners: combined with the flamer, you can actually wipe entire squadrons. Chorus is NO LONGER a simple comfort spell because CDR got nerfed.

I don't take Ecclesiarch's Call nor Holy Cause because the uptime is too bad but if I had to pick one, I'd probably pick Holy Cause.

You are the backbone of your team, you both can play aggressively or protect & save your allies.
If you're not last survivor of your team with this build, you're doing something wrong.

Your worst enemies by far (especially in Havoc40) are Reaper . Be wary of them.

Shield of Contempt + Bleed for the Emperor + Restoring Faith + Holy Revenant  with an HP curio is a combo that makes you very, very, VERY tanky. Just try it and you will see !

Talents to consider taking:
- Backstabber is very good to kill Beast of Nurgle and Mutant that you just dodged
- Prime Target one of the few talents that give both sustain and dmg but sometimes doesn't matter when you spend too much time running, it's also useless against bosses
- Hubris good DR that is easy to trigger

Talents to consider dropping:
- Anoint in Blood I honestly don't know if anyone would want to get rid of that as Flamer is too *damn good* but feel free to drop it and take Backstabber instead to preserve the tree pathing if you want
- Enemies Within, Enemies Without huge toughness regen tool that I feel has big impact (especially against bosses) but I don't think it's vital either
- The Master's Retribution saves your clutches from dogs and helps not taking dmg from ragers but useless against bosses, feel free to drop it if you like other talents more