This Brain Burster build, focuses and relies on using you brain burst ability. Brain Rupture does immense damage to single target enemies, with added benefits as your get more skills. Brain Rupture should be used as much as possible, as frequently as possible. The more elites/specials you eliminate for you team, the better. This build includes many different ways to reduce your peril. Use your combat ability freely, and frequently. Your role is to eliminate elites/specialists as swiftly as possible. Where the Psyker lacks is maneuverability and could have better survivability, but excels at very high burst damage, killing elites/specialist before they become a threat.
One of the strongest melee weapons for the Psyker, the Mk IV Force Sword is versatile and with comes with some amazing perk combinations.
For perks with this build, Shred and Unstable Power are 2 great perks to have. Having increased critical hit chance just by hitting enemies with consecutive attacks makes for a pretty devastating weapon. The more critical hits, the faster the enemy dies. Since Peril will be quickly generated thanks to brain burst and the Voidstrike staff, swapping back to this sword with high peril will give Unstable Power the max power bonus. With high power, all your offensive capabilities will be nicely increased.
For modifiers, Maniacs and Flak will cover a wide range of enemy types for both normal, and elites.
The Voidstrike staff is easily considered one of the best staffs available for the Psyker. It has great attacks, both charged and uncharged, able to deal with hordes and tougher enemies.
Surge is a simple perk that will fire 2 shots on critical hits rather than one, doubling your damage. This applies for both charged and uncharged attacks. Transfer Peril helps keep your peril under control, allowing for more attacks before you need to quell or swap to your sword.
Maniac of Flak will cover many enemy types, and Unyielding will help against tough enemies, and monstrosities.
Curios are really flexible, with only a couple perks that really benefit builds. In this case, Health can be substituted for Toughness if required, but health is still recommended. You will want at least 1 Curio to have 1 Wounds on it, wounds increase the amount of health bars you have. This is beneficial, especially on higher difficulties, as it allows some leeway if mistakes happen, or you get overwhelmed.
Stamina Regen is really important and should be the only modifier you go for one each Curio you use. Combat Ability Regen is very useful to activate your Venting Shriek more often, keeping your peril low, and dealing with enemies quickly.