If Leonardo was a toaster and also had a f*cking gun
 Skitarii Build - Warhammer 40k: Darktide 

If you feel lacking toughness replenishment, then swap Residual Current Buffer for Omnissian Recharge Litany. 

Same goes with Ablative Motion Routines and Uncapped Arrestor, but I HIGHLY recommend to keep Ablative Motion Routines and utilize single target heavy attack of Branx Mk XI Paired Transonic Blades with QQ cancel. This way it's faster than block cancel or looping with light attacks in between, and most importantly you'll be generating stacks of Bladed Momentum more often since this H1 does X shape attack in which each blade is considered as separate source of melee damage. In addition, 2nd strike of X shaped heavy also ignores carapace hit mass nullification, which means in very tightly stacked packs of carapace enemies you'll be always hitting two of them with single X shaped heavy attack (also helps keeping up Bladed Momentum, obviously). Furthermore, we can input sprint while charging our uninterruptible heavies, thanks to Hydraulic Impact, which also increases damage of our X heavies, just to keep up damage reduction from Ablative Motion Routines. It all synergizes with each other very well.

Gunsmith has unintended mechanic with staged reloads, and swapping to your melee before your reload finishes and wait for it to regenerate all your shots back will pause last reload stage and transfer it to your next reload. That means right after emptying your mag, your next reload with start with the last stage of animation kept from previous reload, loading shots significantly faster than usual. This will be probably fixed in the near future, so when it happens, I recommend swapping +5% crit chance on Branx Mk CV Galvanic Rifle to 10% reload speed.

I'm running x3 30% Toughness Regeneration Speed because of how effectively it synergizes with Resurgence. I'm basically just coping that I'll get at least one another Skitarii who's using that Aura in my team. I recommend instead using something related to stamina, because I personally find myself struggling with it on Skitarii most of the time... if we're not using any stamina related talents, which is our case here.

I'm not going for any Blitzes because currently I haven't had any issues where I were dying from ranged attacks too often, so no Integrated Refraction Emitter for me, and Artificer Servo-Skull is pretty much dump talent, because it only makes your skull to have all the buffs you apply to it by a simple button press that doesn't even require any resources to be permanent, meh. And for Noospheric Command, we can accidentally overuse it and leave ourselves with too low Capacitance stacks, and we'll be killing our main targets quickly anyways, so there's no reason improving servo skull with these talents. Also, I noticed that with Noospheric Command it rarely shoots nearby targets and only does that on player's command, while basic version just fires at closest enemies when you activate it and it doesn't require you to selectively find target and ping it twice for it to attack (But you still can do it with the basic servo skull whenever you need it. Also works while downed or incapacitated).