Skitarius Alpha Vanguard
 Skitarii Build - Warhammer 40k: Darktide 

Skitarius Alpha Primus Vanguard - The True Allrounder For Auric (And Possibly Havoc)

This build will constantly pump toughness to your team as long as they are in Coherency, but will certainly keep you firm as long as you don't get overconfident or don't get cornered badly. You position as a pure off-tank: staying close to the front at most times, but keep your ears open for any nasty special cue to take them out from a mile if needed. If you play your loops right, even a Crusher can be put to sleep in 3-4 well placed swings. There aren't many "toll talents" in the build, but there is Hybrid Combat Covenant and Sequenced Charge. They aren't useless by any means, if you can swap your weapons quick to get some kills off with your Headhunter Autogun you may get something out of the former (but it doesn't worth forcing it), and the latter gets you some mild but welcome boost after you erased some heads with Advanced Combat Doctrines on. Key Talents are Resurgence aura, Power Overflow ,  Invigorating Overload . Minor boosters include Kinetic Energy Distributors , Restoration Protocol , Entropic Transfer, Servo-Core Recharge Engine and Confident Strike blessing. Your main weapon is your maul. Constantly pulverizing anything that's in front of you, keeping your and your team's toughness as stable as it gets. Your ranged weapon are secondary but that doesn't mean less important! Since the talent tree reaches for specific nodes there aren't much room to go around, except for maybe the most important interchangeable: your blitz. You can either go with Artificer Servo-Skull and any modifiers of it, or use Overcharged Arc Grenades . Servo skull kills may enchance your Hybrid Combat Covenant , while the grenades give you an underrated (yet resource consuming) "ohsh!t" / blob clearing option. It's up to anyone's preference. In case havoc demands it, you may choose a Talent to sacrifice for Ablative Wards so you can take a bath in Nurgle's goo and don't even notice the smell. About the Power Overload Keystone: I've tried Redline Capacitors as well, but this one seems the right one for this build. Since you're tanky enough, Static Capacitor Drain will give you some rock solid bonuses quite fast and you should be able to hold onto it. 

Weapons

• Branx Mk III Arc Maul : Set perks are highly advised, those are the beefiest and most dangerous melee enemies you come face-to-face with on a regular basis. So are the blessings for this particular build. Confident Strike keeps your Toughness maxed out, so you can support your team with Power Overflow . Execution gives a big chunk of damage to Staggered (which includes Electrified) enemies and meshes well with Weakness Analysis Doctrine . When push come shove, you switch to your Arc Mode to delete Carapace platoons. While I use Arc Effeciency as my dump stat, it still contributes respectably if you position yourself right. 
• Graia Mk VII Vigilant Autogun : Now here's a real ace up your sleeve! Ghost with Advanced Combat Doctrines is a pairing that gives you a literal line of sight reach with 100% accuracy and ranged immunity. The perks are somewhat interchangeable. I use +5% crit chance to capitalize on Deadly Accurate and +25% damage versus Unyielding mainly against Reaper  oppenents, but is really useful against Bulwark and all Monstrosities.

Curios: x3 Tougness

• x3 30% Toughness Regeneration Speed: Resurgence aura keeps your Coherency Regeneration going constantly. This is just huge and it truly is an Ogryn's best friend on Havoc.
• x1 20% Damage Resistance (Sniper): This would probably be useful only with golden Toughness on Havoc. On Auric you can take a shot and still keep in the fight.
• x2 +5% Toughness: Gunner resistance is redundant with your ranged weapon setup, this option just gives more cushion for you and more to share with your team.
• x3 +12% Stamina Reneneration: you will need this on high difficulty.