Go Go Gadget Daemonhost Lobotomizer
 Skitarii Build - Warhammer 40k: Darktide 

No idea what to write here.
Spam F when there's elite trash on screen.

Chordclaw Strike 

This is your main problem solver and something you will be lobotomizing enemies with.
It deals enough damage to kill anything without health bar in one hit on charged strike and around 1600 on uncharged.
Slice and Dice is cherry on to spam in the heat of the battle.

For some reason it's not told in-game, but Axial Slash does NOT replace your single target attack, it just adds uncharged one.
You can hold your ability key to perform single target hit with full damage.

Redline Capacitors

At max stack gives:

• +25% Toughness DR
• +25% Capacitance generation
• +2 Ability charges
• +15% Rending
• +25% Damage on ability use

Add Flux Conduit Build-Up and Reactor Coil Recharge to this and you get stupid amount of ability uptime.

Foe-Render Creed

Gives you and your teammates in Coherency +15% Cleave and +7.5% Rending. TLDR more damage, probably BIS aura on Skitarii.

Integrated Refraction Emitter

Testing required, all Skitarii blitzes are meh to me and more of flex slot.

Artificer Servo-Skull with Medicae Servo-Skull and Purgator Servo-Skull for more crowd control and ranged res ability.

Integrated Refraction Emitter with Kinetic Repulsion and Overcharged Refraction Emitter for self-survivability.

Arc Grenades with Overcharged Arc Grenades and Enhanced Arc Grenades for uhh uhhhh...

WEAPONS

Branx Mk XI Paired Transonic Blades 

Your primary (duh) weapon.
Since we have enough carapace and boss damage as-is with Chordclaw Strike there is no reason to go for Carapace and Unyielding damage perks.
So instead, we are going full walking blender mode.

Shred gives you +25% Crit Chance at max stacks. With +5% CC and Last Stand Relay it's 36%/40% total CC for melee weapon. With Uncapped Arrestor you will be critting A LOT.

Savage Sweep and Adaptive Combat Calibration make sure you have enough cleave to virtually hit everything with every swing.

Branx Mk XI Phosphor Blast Pistol 

I... don't know how to feel about this weapon. It's goodn't? (Further testing required). 
I both like and dislike how this weapon feels.
Surgical would probably be better to have but I just don't like to stand there and not shoot, so instead:

Infernus and Man-Stopper are horde spammers. With base-kit phosphor burn it in theory should be great against hordes of armored trash. Just mag dump it and then finish what's left with chordclaw and melee.
+5% CC make it proc blessings more often.