(General POV)
Location the XCOM World-Earth, Europe-Unknown ADVENT Blacksite Battlefield: XCOM vs. ADVENT
The battle between XCOM and ADVENT, was only staring and it was clearly brutal, as some ADVENT Officers were moving onto another position to attack the human rebels, only for a sharpshooter sniper that caught them in their sights, took aim, and fired.
A double-kill, via one headshot and the following alien hit in the chest, blood and gore gushing out, as this squad of ADVENT Officers, were in complete dismay now that they'd lost their squad commander, rushing erratically for cover.
As rookies soldiers, rush in firing spray of automatic fire, taking out that squad that the Sharpshooter took out the previous officers, more and more gun/laserfire was flying across the air.
But just as the codexes, were rushing across the battlefield armed with alien style firearms, these feminine cybernetic xenos, were deadly assassins of ADVENT, and guards of their most secure networks.
A codex spotting a target, a middle-eastern Ranger, he was hooded and covered in some protective platting, with a longsword, strapped to his back.
The codex she has eyes on her target, taking aim, and just when she was about to pull the trigger of her pulse assault riffle...when a deep reddish pulse of energy, burst out the ADVENT blacksite facility.
Blasting the extremely tinted glass, exploded and millions of shard, blasted out from all corners of the facility, as the pulse spread across the area.
It was the V A S H T O R R signal has breaken through all the firewalls, and defenses that ADVENT, has been desperately trying to expunge from their entire network.
But it was a futile action against the Arkefine, only serve to amuse the Lord of All Technology, as the signal has immediately started to infiltrate the core systems of the Codexes and Gatekeepers, not only in this battlefield, but spreading out from all consoles connected to the ADVENT network.
As the signal of the Arkefine, blared and spread allover the area the Gatekeepers and Codexes not only near the corrupted ADVENT blacksite, these machine xeno creatures were hearing the dark divine words of the Dark God of Machinery, and it wasn't only corrupting them...it was enhancing them, it was liberating, and exilihirating.
Already all across the Earth, these alien machines were starting to mutate and change under the powers of Vashtorr, the codex retaining their color and feminine form, but transforming into more daemonic entities, while still retaining much of their original design.
The Codexes, they are starting to shriek as their once sleak, smooth, mouthless faces, tore open form large mouth with jagged, razor-sharp teeth, as echoed, reverberate feminine screams, are released from new mouth and vocal cords, orange and black tipped curved daemon horns, began sprouting through all the codex under the viral infiltration of the Arkefine...
The partical energy that once blasted behind their heads, started to drop and become less chaotic, resembling orange, red orange, orangy-brown, and black particle like long flowing hair, with multi-section red orange barb wires, in the mix of this new "hair" of these she-daemons-in-the-making.
Purpose...desires...persona...life...non-existentance...enlightenment of Chaos, surged through their cortexes, as their transformation quickly continued to progress.
Soldiers of XCOM, seeing the unknown threating actions of the Codexes, they opened fire at them, as priority targets, but their weapons did nothing, as these female ascending machine-daemons, started to change in their form.
Ensensuating their female aspects, and asset, along with growing in height and length, their dark orangy-brown hands started to become elongated, barbed, razor-sharp claws with neon orange tint to them, their feet once smooth like a shoe design, split into a inward curved pair of orange claws, with a third back claw in darker orange, in the talon part of the feet.
Lastly these nearly completed she-daemons, all sprouted a very long, thin tail with barbs, and a sharp barb arrow-head at the ends.
Utterly unaffected by the bullets, lasers, and explosives being onloaded on the near three dozen codexes, in the area.
Once the smoke and dust cleared, and both XCOM and ADVENT saw the changed Codexes, (truth be told, I was a bit inspired by a demonic version of the symbiot Scream, one of my favs, so I design the ADVENT codex daemonification after her.) both man and xeno were intimidated by the look of these women white lifeless eyes.
Taller, clearly stronger, and much more threatening than before, as one smiled...actually smiled, before shrieking in a echoed, reverberate sound, like a robotic banshee crying doom.
They started to spread out, and killing everything in their way human and alien alike, a Muton tried to blast one of these corrupted codex, only for the she-daemon, to tear the Bruce's arm off with ease, and take the blaster for her own.
Immediately in her grasp it mutated, and transmagrofied into a huge blaster with metallic, serrated edge claws of orange, as alien technology merged to become a daemonic weapon for that Codex.
This along with many other codexes, started taking these xeno-weaponry to merge with themselves, to become more deadlier killers in the name of the Arkefine, the Liberator of Cybernetics.
That wasn't the only thing being affected by Vashtorr's signal, the Gatekeepers, they were also being mutated by the Warp's dark powers, spreading across this world.
The Gatekeepers were sending enhanced psi waves, all around them in utter distress, as the ruinous power now flew in their cybernetical and organic cortexes, (quick reminder, even if the game classifies these alien as robotic, they have organic mass in them, so they should be considered techno-organic, and capable psykers.) the mark of the Arkefine, manifesting around the shell area, where their core-eye peak through.
As all broken and scattered part of alien tech, in this rocky terrain was being psychically pulled toward the gatekeepers, along with organic mass was also being drawn and merged with these corrupting aliens.
Their once pure white, pristine shell started to darken in a more dirty gray chrome color, with brass spike plates, spread around the shell outer-form.
Once a ADVENT Commander, tried to give a gatekeeper, order after it stopped changing and expanding in mass, as well, the gatekeeper turn around and look straight at alien, barking command at the newly ascended herald of machines, using its new daemonic sorcery and dominion over the powers of the Immaterium, blue and electric blue energy started to burst forth from the gatekeeper.
Binding the ADVENT Commander in place, then in a psychic hold, lifted the ADVENT alien in the air, he in his futile attempts of struggling, against the invisible psi-hold on his body.
Kicking and twitching against the gatekeeper's psyker power, as the Gatekeeper started to split open its outer-shell, and reveal the bionic-organic daemonic form underneath.
Multiple cables and tentacles like those of a venom crawler, with sharp barbs on trails of the tentacles, and ending in a long, extremely sharp edge, chrome spear tip of these tentacles.
Flesh holding and linked to the various split part of the shells, some of these masses having fangs, eyeballs, faces contorted in fear and anguish, and pieces of machine like that of a advance control console, with screens of data and symbols that the ADVENT Commander, can't identify.
At the core of the corrupted Gatekeeper, a massive glowing red eye/core encased in a chrome colored eight-points star of Chaos, a large amount of mass underneath the eye, forming a massive mouth with rows of razor-sharp, curved fangs that resemble metal, and three long tongue, extending out the mouth.
Roaring at it prey, the newly daemonically ascended Gatekeeper, started focusing it newly awakened, and powerful psychic might, directly at the mortal xeno, as sparks of silver and electric blue lightning started to surge through the Commander's body.
Burning his body, and exploding his eyeballs, as his blood boiled away under the power of Chaos.
As the Gatekeeper, claim the xeno's life, mind, and soul for itself, as all gatekeepers, under the affect of the Arkefine's signal, were ascending and gratefully becoming apart of the Lord of All Technology, the codexes and gatekeepers were attacking everyone, human and xeno alike claiming their lives and souls, for the Dark God of Machinery.
Gatekeepers, now one with the powers of the Immaterium, started opening portals and gates into Warp, unleashing their daemonkin into the world.
Venom crawlers, husk exos, silent stalkers (Servent of the Silent Ones), and the other latest daemons of the Legion of Infernal Machines, terminators, and annihilators, as the vashtorrie invasion of this world has began, millions of mortal were being slaughter in the name of the Arkefine, their souls offered to Vashtorr, as the world was swiftly falling to the forces of Machinery.