Disclaimer: This is just a fanfiction of an cross over between Overlord (the anime and light novel) and the Warhammer 40k verses. I will take any feed back in the review section.
Sorry for the long delay im a workaholic and have no time to think about childish stuff like would a necron could beat a slanesh demon.
A whirlwind of blades forms atop the highest building overseeing the city below, both opponent wielding their four melee weapon respectively, their form is magnificent, their techniques unequal, and their blade masterfully crafted.
For its entire existence, the keeper has never given ground in a melee confrontation, but this single opponent who is two head shorter than it not only push back but actually gain the upper hand against it. Its blade is powerful even more so than a human mastercrafted power sword, it welded four weapon simultaneously halbert long and short sword and a great knife, each weapon are used to cover each specific range making sure to counter any type of attack. Every strike every parry caused nick and even structural damage against the keeper warp empowered sword and claws, the refined technique from countless civilizations and even the relentless taunting and teases fell to deaf ears as its opponent singularly slashed and parried. Its movement is smooth and elegant in contrast to its flat and robust appearance, the keeper's enhanced sense become detrimental as it feel the chill of winter, the cold it felt is by all means unusual, and the battle is not high enough for the air to freeze over, nor is their location near any cold climate. A thin layer of ice forms across the surface of its skin, and the ice quickly hardens forming unbelievably sharp shards stabbing its joint and muscle constantly causing frostbite wherever the shards stab, punishing even the smallest of movement. Such minor inconvenience poses no cause for concern, but while facing such a powerful opponent even minor changes will lead to defeat. Once again locking blade, its claws and blade push against the weapons of this machine, even with the furry of strikes and slashes the only visible damage is the nick and claw mark upon the machine recently formed ice armor. Although it has many time been defeated by Londes, to fall to the blade of any other that it love is extremely undesirable, the keeper could still feel the newly opened rift and judge that it can just be reformed in the warp and come back with an even larger army of daemon before the day end if it were to be banished by the blade of this soulless machine. By letting its attention focus on the warp gate for a single mini second, not noticing the upward vertical slash of a great dagger cutting off three of its finger, using its strength the keeper pushed and backed away before it about to receive a stab to the abdomen. Even before the finger could touch the ground another set have already replace it, not being allowed a moment to reset the engagement the machine pressed on forcing the keeper to be in the defensive.
With the conviction of inevitably winning this war, the keeper proceeds to parry the attack aiming for its neck and recklessly jab at the machine beginning its counter attack. It swipes wider and hits harder by channeling most of the warp energy enveloping its blade and claw to focus on body strengthening, such gamble bring in dozens of preventable injury. But in mere moments it gained back the upper hand of the battle, by recklessly attacking it land multiple strikes upon the metal skeleton.
Cocytus now the one being assaulted he struggled to decipher the reason for his foes recklessness, the previous refined and meaningful techniques and strike turned into sweep and swing. The abomination disregards itself to solely focus on the battle, as a general he silently condemned the monster as a failure to its troops and master, he is dissatisfied with the monster's abandonment of its techniques, those perfect forms and movement could only be attained by countless years of battle and practice. Such techniques drove Cocytus to his absolute limit, counter and dodge must be performed perfectly to avoid fatal damages, Cocytus activated his frost field generator halting the molecular motion and gathering it at the body of the monster and forming an armor of ice onto himself. The frost field generator is a modified advanced necron cooling unit usually fitted for destroyer and heavy overlord, the modified unit of Cocytus emits and manipulates a freezing field capable of instant flash freeze to the core of even Krork, the only being capable of withstanding the cold it generated is Krork commanders and psychic attuned Aeldary. For this monster to still battle even with such heavy frostbite damage prove it resilient surpassed that of the current outputs of this damaged and poorly maintained part. By changing its approach the monster landed a few hits cutting apart the ice armor and heavily damaging the necrodermis hull, even so it was still a bit out of reach from any machine part of concern.
Due to the small platform of the building top, Cocytus is forced to meet the monster's aggression head on, they once again lock blades but due to the increased strength of the monster, he is steadily losing, as indicated by the creaking sound of hinges in his leg arm and shoulder. The stalemate quickly stopped as the platform they are currently battling on crumbled to pieces as it could not support the force applying to it anymore, not letting the chance to slip away the keeper prepared for another strike. Now with the entire body weight plus the warp enhancements Cocytus's leg hinges finally gave out, his blade still undamaged but being pushed letting the monster claw to bury itself pass his shoulder bypass the giant layer of ice form to stop it and even the necrodermis hull causing major damage. Quickly before the teleportation could be trigger Cocytus used the utmost strength his frame could now muster to change the angle of his blades letting the monster's claw slide off along with a chunk of his left body, using the monster's own force to bring it off balance. As the blade slide off each other, Cocytus aim for the brief moment the monster tries to recover and release a blast of force energy, a short range but concentrated blast of frost freeze, pushed and freeze the entirety of the monster. The sudden overload of the generator causes it to shutter and stop working, not being properly used and maintained for millions of years will cause such malfunction no matter how advance the technology is, especially when the generator couldn't be stored in stasis due to it particles manipulation property.
Right at the edge of the platform the keeper of secret stand still, it body posture depicts the last stage of a downward horizontal swing. It's as still as an stature and if any being could get close enough they will mistaken it for one, a cursed ice sculpture corrupting any living being close enough with it's both sinister and seductive figure. And exactly like a sculpture there is no thought for an inanimate object, the physical body of the keeper stop it function only moment after the blast of freezing wave, it essen is currently being dragged back to the inmaterium by the rift in the sky, it curses the machine warrior which bested it in combat, readying it self for the next moment when it can traverse to real space to come.
Watching as his friend being teleport away, Demiurge could finally break throughs those perverted being formation, the giant monster that is vanquished by his friend is the most likely driving force of this army, passively enhancing the quality of the ground tropes by its presence, now that it have perish a noticeable advantage have been form for his army. The enemy command structure have been greatly shaken, as with the quality of it tropes.
'estimate time frame for total inhalation... Five hour. '
With the foremost threat now gone, Demiurge bring his focus to destroy the hiding hordes, while minimizing the loss of his own advancing army.