Fontina-the-Hag
 Psyker Build - Warhammer 40k: Darktide 

You could make changes for a much more offensive build, but this is just a chill build to take into Auric and do events. I personally don't play that much havoc, so not sure how well it will do there. 

-Spamming the left mouse button on melee or ranged will let you crit and keep empathetic evasion up. Defensive nodes, toughness generation, and health curios will make you surprisingly durable if something gets past your dodges. 

-Soulblaze and warp abilities will empower melee attacks with Malefic Momenteum, and melee will empower your warp abilities. 

-By crack of bone and lmb spam will quell scriers gaze to stay in it much longer. You can also quell while in high stacks of scriers, and on Auric, you will be able to regenerate toughness very quickly.

-When scriers does drop, you will have free casting for 10 seconds. Using the warp splitting node, you can spam staff bolts with cleaving, crits will shoot double the bolts from surge, and spread 4 soulblaze with blazing spirit. Surge also adds another 5% crit, making it even easier to crit.

-Between your staff, Wildfire, and perilous combustion, you'll have Soul Drinker up most of the time. Kinetic Flayer can proc on Soul Blaze and cause perilous combustion; it's a vicious cycle. 

-Demios, mettle, disrupt destiny, and scriers will have you moving incredibly fast. I personally like to grab the two extra stamina since I enjoy sprinting around the map.