Self Reliant Crackshot Vet
 Veteran Build - Warhammer 40k: Darktide 

With this build, you can reliably and efficiently take out priority targets for your team whilst being safe from enemy attention thanks to infiltrate and low profile. You can also do clutch revives with it, dodge incoming attack(s) and just reposition / throw off unnecessary heat. When you DO actually have to engage enemies in melee combat, your power sword will do a great job at slashing them in twain. Thanks to all the weakspot and long range damage nodes we took, the +%30 damage from infiltrate  AND Marksman's Focus (which we can actually afford to use since the enemies won't target us AKA you can stand still and not get demolished) we can reliably one shot most enemies (including crushers sometimes). 

NOTES:

1. I don't really feel the need to get toughness regen nodes when I'm playing but you can take the new and fixed Exhilerating Takedown by sacrificing a node of your choice.
2. I use my power swords %90 of the time to hordeclear, hence why I take  +unarmored. Maniacs, unyielding etc. are all viable and up to preference.
3. I use the same curios on all of my classes, if you prefer something else that's totally fine.
4. You can and should use your infiltrate to do objectives or revive teammates since the invis + low profile makes it almost risk-free.