Invincible Zealot
 Zealot Build - Warhammer 40k: Darktide 

This build is my Comfy Build

basically it allows you to stay alive as long as possible while using stealth to safely complete objectives or get revives off safely

Martyrdom is optional, the buffs are nice but its mostly used to relieve the burden of deciding who gets medicae and makes it significantly hard to get sent off into the corner for time out

because it relies on dodges to regen toughness it works well as a 1vE clutch style of build where you can buy time and use your stealth to safely get teammates up when all feels lost.

the weapons are flexible as well, I've had good luck using the eviscerater/chainsword, devils claw. zarona, etc but i find the chainsword to be the best alternative because the ripper really makes up for the lack of grenade spam a Vet with a build like this would have to take care of Crushers, Bosses, w.e(i use the throwing knives to deal with snipers and dogs, that kind of thing from a safer distance because the flamer doesnt have the range of the Zarona(also a great alternative to the flamer but its no lasgun in terms of ammo capacity). So that's where i use the flamer to brittle up the crowds and bigger guys and then get to work with melee, or alternatively just dump the whole canister into them and cleanse them all with holy promethium

feel free to swap some blanket damage for backstab if you wanna feel extra sneaky but the backstab buff from shroudfield feels pretty good on its own.

also swapping reload speed for carapace damage is also totally fine, like i said its my comfy build, its for when i wanna throw on music and just have fun rather than be a glass cannon

haven't tried on H40 but works flawlessly in Auric, very few pucker moments but holy rev/until death than keep you limping through the map even if you've been forsaken by the emperor