Gandalf's 'Scriers Inferno' DD
 Psyker Build - Warhammer 40k: Darktide 

A thought that came to mind after I already made builds for Shriek, and then for bubble thanks to Havoc as well, before I was like 'does Inferno work with Scriers to? it does like to crit...' 

Turns out, it does! It's not the GREatest thing in the world compared to 6 free stacks of soulblaze every few seconds, but using the same understanding from the bubble build, throwing up Warp Nexus and just taking into account the need to charge your flame more to keep Blaze Away up, you can still do some pretty good damage and stack your fire really fast. About the only unfortunate thing is the fact that you don't get to much benefit out of DD's weakspot damage, but that's why I threw on a Duelling sword so that at least against armor I do get that bonus! 

Kinetic Flayer is then the main way True Aim is stacked up, but it's also helpful to have a guaranteed crit when coming out of meleeing people. Beyond that, being able to just 'shoot as much fire as you need to' no matter what to drop what's in front of you is useful, and to make up for the lack of Solidity I got Battle Meditation to largely make up the difference.

It's an interesting flavor difference for the inferno staff, Very much worth a try!.