Hidden Hunter
 Veteran Build - Warhammer 40k: Darktide 

Become the deadshot in the darkness. This might be a confusing build at first glance, but the main point of it is to have a hit & run playstyle, striking from mid range flanks and having a clear shot on important targets. And what better weapon to use than the revolver? Punch holes clean through the armor and heads of heretics and traitors alike without them ever seeing you.

To start, your melee is the Tactical Axe. Model variant is personal preference, as is this not the main part of the build. Good single target damage, with heavy attacks being Strikedown. Perfect for sneaking up and cutting skulls wide open while in stealth. Has decent armor penetration too, and the blessings selected allow you to get a tremendous first hit, along with several follow ups.

Your second weapon, and the star of this build, is the Stub Revolver. The model must be Zarona, as it allows you to ADS, unlike the hammer fan of the other one. Very good headshot damage and armor penetration, hampered only by the low ammo count and sluggish reload times. Aiming for the head will get the  most mileage out of the blessings, more so if you just killed something in melee first, as the rending boosts your armor penetration significantly.

As for tactics, you will adopt a more flank-heavy style, setting up attacks from around corners and behind cover. This is where your revolver comes into play. Pick a target, Infiltrate, stand still, take aim, and your enemies will be down an Elite or Special right away. Once you leave stealth, you'll still be in a low profile, so it's fine to stand still to make the most of the Keystone. The point is that you don't have to worry too much about losing stacks, as it's only to drop a few targets without being spotted before moving on. The Krak grenades are extra insurance. And don't forget to use your ability to save downed teammates!