Gandalf's 'Voidstrike Battery' Shriek
 Psyker Build - Warhammer 40k: Darktide 

A build crafted after I realized that I had a 'battery' build for every other staff...but not for this one! I originally thought 'it could not be done!' given the staffs heavy reliance on True Aim...but turns out, it can! ish. You have to take smite and not upgrade it at all, which isn't that big a deal, but Kinetic Flayer is always nice and it's sad not having it.

But beyond that, it's pretty good! Max base damage crit Voidstrike is pretty effective, and having the greatsword as a fall back is rather nice too. I use the VI just because I like using the VIII when I have attack speed, and the VI when I don't, so it never 'feels weird'. This is also the one VI I use for ad clear instead of armor shreding, so it's an interesting change of pace.

But yeah, main thing is just to get and maintain high Warp Siphon stacks, do lots of damage with a Voidstrike staff, and hit things with a big sword when you need to/shove them away. It's not the most effective Voidstrike build, but it's usable, and as stated, a nice change of pace.