Crit Arc Vanguard (VERY Strong Hybrid)
 Skitarii Build - Warhammer 40k: Darktide 

Build Basics

Hybrid build with very strong melee and ranged options.

Using Arc Rifle a lot with this build, really isn't weak in any scenario, Gunsmith to offset the insanely bad reload speed.

• Branx Mk IV Arc Rifle clears entire rooms in seconds if you prime enemies with Voltaic Emitter.
• Branx Mk III Arc Maul is a stagger machine, stunlocking Ragers when charged, clearing just fine when not.

Weakness is going to be against monstrosities, Branx Mk XI Phosphor Blast Pistol with Infernus is an option for that, though, the Arc Rifle shreds basically everything else with this setup and your damage won't be that awful anyway.

Medicae Servo-Skull feels almost mandatory in any Skitarii build, Arc Grenades are an option but giving up zero-time ranged revives makes it a hard sell.

Munitorum Mk III Shock Maul can replace the Arc Maul, though, because Arcs can crit, I use the Arc Maul. Consider the Shock Maul if you want to play Power Overload (see below)

Flensing Protocols vs Power Overload

Flensing Protocols and Power Overload are basically interchangeable, power wise. I've chosen Flensing for this build as both the weapons and the Arcs can crit, though, if you'd rather use the Phosphor Blast Pistol then Power Overload might be the play.

• Take points out of Last Stand Relay and Flux Conduit Build-Up 
• Put them into Precision Combat Augurs and Hybrid Combat Covenant
• Then Static Capacitor Drain and Powerdrive as your Keystone Modifiers.
• Electro-Strike Conduit is also far less impactful with less crit.

The amount of crit you have without Servo-Sinew Surge is probably negligible enough to drop crit nodes entirely.

Other Talents

If you want more Capacitance generation, you can sacrifice Moebian Conductor for Higher Purpose. You could opt to scrap Gunsmith and Ammo-Cell Augury as well if you don't value Gunsmith highly.

Personally, I've had no problems with Capacitance, you could comfortably drop a node if you really want another talent.

Omnissian Recharge Litany, Channelled Motive Force, Voltaic Overcharge and Higher Purpose are all talents I'd probably pick up if I had spare points.