Callidus assassin (Fire grenade - Infiltrate - Piety)
 Zealot Build - Warhammer 40k: Darktide 

Well used, stealth Zealot is both powerful and useful to the team. It can delete Crushers or beeline to the Gunners row with little risk and high efficiency. Be careful to stay with your team still! Even tho we have Loner and Fortitude in Fellowship (meaning we can handle things even alone / clutching), they might still need you, and the safest place even for you is most often next to them.

We take Invocation of Death and Blazing Piety to reduce Shroudfield's duration to the minimum, and Enduring Faith allows us to be very tanky while we dish out punishments. Both melee and ranged choices are made to maximise crit chance and take advantage of it: the Dueling Sword has a great crit multiplier thx to its finesse stat, and the Revolver shreds on crits thanks to Hand Cannon. Since we have shroudfield, we might have one or two more seconds to aim with our revolver, making Surgical the superior blessing choice.

Exchanging Faithful Frenzy for The Master's Retribution makes sense for Hunting Grounds, or to give you more breathing room.

Melee alternative: Catachan Combat Blade (Flesh Tearer, Ruthless Backstab)