New but familiar enemies to face: Face your fellow brother Tech-Priests in an internal conflict over Necron xenotech while also holding back the wakening of the Necrons.

Pass through Necron and Heretek limbs alike with the Transonic Blades of the Ruststalker or take the stealthy route with the Infiltrators and spring an unexpected ambush.

Two new Troops to command: Sicarian Infiltrators and Ruststalkers are now available to unlock.

New weapons to discover: Xeno-altered weapons open up devastating possibilities, coupled with support tech that opens up new play styles.

The choices you make will impact the battle for that mission. 5 new missions: Experience five new missions based in the Ark Mechanicus, each with a new delivery system for narrative.A discipline that is specialised in using xenotech, a largely forbidden practice for those that follow the Omnissiah! Plus all new augments for you to customise the appearance of your Tech-Priest. New Discipline to utilise: Unlock the Xenarite.Can you, Magos Dominus Faustinius manage both an assault on the Necrons while being corrupted from within? Features Take on frighteningly familiar foes, a cohort of heretek Tech-Priests that have changed their beliefs and forsaken the name of the Omnissiah. Brand new narrative events have been handcrafted once again by Ben Counter, allowing players to uncover what has brought civil unrest to The Caestus Metalican during its campaign at Silva Tenebris. Opening a whole new plot line, Heretek exposes the dark underbelly of the Adeptus Mechanicus faction like never before. Heretek is the expansion to the critically acclaimed tactical turn-based Warhammer 40,000: Mechanicus.

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