Cap'n Ashley's Infinite Soulblaze
 Psyker Build - Warhammer 40k: Darktide 

My 'Infinite Soulblaze' build | Easy

Blaze Force Sword - Deimos Mk IV:
Heavy1 attacks (H1) and Light1 attacks (L1) are good at poxwalker horde clear. As for it's special mode, that can do serious damage to Carapace and lock it in place for a second, including yourself. But it'll stop crushers, maulers, ragers, and everything of the sort if you can connect either a L or H swing with the warp mode. This'll enable either your team or you to continue attacking and kill a priority target.
With Deflector you can block ranged attacks as you move in closer, since you aren't using shield. And Blazing Spirit will proc soulblaze on enemies crit*, always good for extra damage, and it of course fits in the build. 

But that's not the focus of said build. This is:
Inferno Force Staff - Rifthaven Mk II: 
Primary isn't the most useful, but it's quick. The secondary is charged, and for each second spent firing you gain +strength, thanks to Blaze Away. Penetrating Flames also works to apply brittleness to targets hit, this is great cause you will literally never stop firing!* Okay you'll stop firing sometimes, but still. Thanks to talents called Battle Meditation and Empyric Resolve you have a total of -50% peril generation. This means you can fire your flame staff for as long as you wish essentially, and when you want a damage boost, or if you are about to overload use:

Scrier's Gaze:
My favourite Psyker ability. Scrier's Gaze works to immediately quell 50% peril, so if you are about to overload this can be an "oh shit button" essentially. But the focus is the damage increase it gives, as well as passively generating peril. With talents like Warp Rider you gain +damage as peril increases, and the Gaze increases it exponentially as well. With the modifier Warp Speed you get movement speed while in the Gaze, and Reality Anchor furthers the reduction of peril generation by -20%. 

Brain Rupture:
Your blitz in this build is the brain burst, and with it's modifier Kinetic Flayer, ALL your attacks have a 100% chance to brain burst Elites, Specialists, and Monsters. And that has a cooldown of 12 seconds unfortunately, but this helps to take out specials in hordes. And of course if you just need to get that pesky sniper across the map, you can just brain burst them. 

As for the rest of the build and talent points, I'M TOO LAZY. Build is okay enough for me so it's okay enough for random strangers GOODBYE. <3 

also if you ever see me in game say hi lol, sometimes i suck but im usually okay :3