Battle Psyker
 Psyker Build - Warhammer 40k: Darktide 

Okay, so this build is something that I threw together for accomplish and introduce a new play style to break away from staff bubble Psyker on havoc 40.  This build allows you to have all the abilities on Psyker that will make you not only a viable threat to heresy, but a strategic teammate to allow you and the other rejects you're running with the shine like the fodder that they are.  

- wall push.  Your telekine shield allows you annex parts of the map as you travel deeper into your hive mission by providing safety for your ranged mates and a way to stop flamers, trappers, bursters, dogs and mutants dead in their tracks.

-boltpistol.  This could be changed out with las pistol with internus/dumdum if you wanted more ammo conservation, but wouldn't exactly be on the same page of utility.  Lethal proximity acts as a " back up " gun when the hoard decides to get a little too close which fits the aggressive play style this build permits.

-shock maul.  This? Isn't just a melee weapon.  It's an extension of your warp abilities.  With charged strike and enfeeble you're able to stack damage in a way that allows you drive the enemy back into nurgles dirty pillows.

-Nodes/ blessings that synergize. Smite-malefic momentum-warpsplitting-enervating threshold-warprider-disrupt destiny-skullcrusher+highvoltage.

Proper understanding of these nodes and blessing allows you to flat double your DPS with the shockmaul.  40% from skullcrusher, 25% from highvoltage, 10% from enfeeble, 20% from warp rider, 25% from malefic momentum- once you've used smite to build peril and gaining your 80-99% cleave your push attack to heavy attack combo becomes a hoard shredding machine.  Charged strike is butt normally and doesn't help much, but here? It turns your heavy cleave into an electrified blender.  Not to mention enfeeble is so good for buffing teammates damage. 

( Flexible points )

Mainly adjust to YOUR play style however you feel.  This setup works for me.  Bolt pistol is flexible ( I guess, it's goated but WHATEV ) and disrupt destiny with warp siphon for the steady damage increase with warp charges.  Personally?  I prefer disrupt destiny for the consistent toughness regen and the damage buff for the bp.

This build is meant to control the fight.  You will act as center point, you should avoid front lining.  You set the pace, protect your teammates and create the spear to drive into the ribs of the enemy.  Long live the imperium and may the emperor bless your weapons in your quest to cleanse Atoma of the heretics.