Halo but magic stuff
The Pelican hurtled through the air, its back leaving a trail of black smog in the air as it plummeted towards the ground. All inside except the Spartan is was carrying were thrown around passenger compartment as it hit the ground in a crumpling impact. The Spartan wasn't at all surprised by the fact that only they had survived, but they sighed in annoyance when they saw the red liquid seeping out of the chilled storage device that had dented and bent unnaturally into itself. They needed that.
Prying the door off the Pelican was easy enough, as was the the 40km hike to the fortified UNSC position where they were to make contact. The harsh sun bouncing harshing off the golden visor of their black armour had alerted the snipers to their position immediately as they cleared a hill near the military camp.
The Captain in charge was wary when meeting them ofcourse, not sure of what type of Spartan they were.
"Welcome to hell Spartan, I'm Captain Burrow and I've been designated to give you your mission. I had heard your ship was shot down, will we need to... make any special arrangements?"
The Spartan took a glance around the camp spotting someone of interest. "We will discuss it after the mission."
Hours after the moon had risen and the sun set, the Spartan began its hunt.
In the dark nights The Covenant forces stationed on the planet had slowly grown in paranoid chatter as units would slowly stop their regular check ins to command.
For armour so heavy, the creature moved quietly in the underbrush of the forest as it made its way to the commander of the platoon.
The only warning the Elite Commander had that something was amiss was that one moment his guard was to his left, and in a gust of wind he was gone. Five feet behind him he heard a sickening crunch followed by a squelching sound and a splatter hitting the ground.
Turning around he saw one of the demons of the humans, the armored monsters that they unleashed to murder his kind, and in its hands was his companion.
Alien blood always tasted foul to Heinrich, but the looks on their faces always made up for it. To see the terror in their eyes as they realise what had happened.
ONI had sent him to look into the General leading the site known as Black Castle, a supposed strong hold and listening outpost.
The problem now was that is was overrun with Covenant forces seeking to search the already erased data banks held within its deepest vaults.
Thankfully enough, he was an ONI agent. He knew ways to solve things, except his ways were of a less morally standard.
"I'm sorry for this" he says to the General before plunging the dagger into the mans heart. "I need a sacrifice for this."
Around the compound, Covenant forces find themselves fighting strange humans making rigid movements that didn't seem to die so easily. Humans they swore that they had already killed by the burning marks of plasma that littered their bodies.
"WHO BRINGS ME UPON THIS MORTAL COIL FROM MY MILLENIUM SLUMBER" the creature booms in its deep commanding voice as it appears within a giant circle of binding
"WE CALL UPON YOU, Z'RR'K'UL, AND BIND YOU TO OUR SERVICE" the ten robed men yell in unison.
"For what reason do you summon me mortals? The price is high for my binding, yet I see you already know that" the Demon notes looking upon the sacrifice of 124 men, 17 women and the heart of a dragon.
"We shall release you upon this world so that you may cause chaos and destruction upon its inhabitants, The Covenant."
The demon frowns at this, he had slumbered for so long that he was not upto date on what the mortals were doing. Expanding his sight outward he saw stars different that his own, and cities full of strange monsters rather than man. He turns his eyes to the man in the lead, and pulls upon his memories.
The man worked for an organisation known as ONI, and was tasked to summon him to wreck havoc upon a world of monsters from the stars that seeked to destroy all of humanity.
While the demon was loath to admit it, demons required humans to thrive within the hells.
"THEN THEIR DEATH IS CHOSEN AND THEIR DOOM GRANTED, NONE UPON THIS WORLD SHALL STOP THE DESTRUCTION THAT WILL BE GRANTED TO THEM."
and around the world of Rh'gyna, all who lived their was filled with a bloodlust and rage that saw friends and family turn on one another to strike eachother down.