I really wanna loving kill everyone who makes or enjoys grimdark. Horror im okay with, but senseless gore and death with no story at all is for ignorant stuff heads.
senseless gore and death
That's not grimdark. This is grimdark.
The planet the Necrontyr originated on was barren and radiation-blasted, making it incredibly hostile to life. It was so hostile that plasma storms and atomic winds constantly scoured its surface. Life on the planet was harsh; lives were short and uncertain. Their bodies were ridden with radiation sickness and they lived a morbid life, constantly fearful of their coming death. They learned after thousands of years that they could not control their destiny with science, their bodies could not be changed to survive on the planet and not suffer from the radiation sickness and perpetual fear of death. Cities were built in anticipation of their demise, and simply became vast tomb complexes with a few homes for the living, in a temporary form.
Eventually they developed sufficient technology to move out to other planets, but had to use slow-moving stasis crypts and slow-burning torch ships to gradually grope out to other stars. After much time, they met the Old Ones. This meeting of a short-lived, dour race to a race of hopeful and nigh-immortal people set a fire of rage burning in the hearts of the Necrontyr. From this moment on, they turned their entire lives to destroying the Old Ones in spite of their superior lifestyles. When war was declared, the Necrontyr realised they would never be able to win, they were constantly outmaneuvered by the Old Ones' mastery of the Webway. The fury of the Necrontyr was cooled after many thousands of years of imprisonment, and their disgust of the Old Ones turned into an utter hatred of all life.
As their star had haunted their own existence, the Necrontyr studied the stars in an attempt to understand more of how they worked and to try to find something they could unleash on the Old Ones. Eventually, they found something so ancient as to predate even the Old Ones. They were named C'tan, or Star Gods. The Necrontyr began to worship the C'tan as gods for their supreme powers. The C'tan turned the Necrontyr into slaves and enjoyed ruling over them with cruelty and distrust. Then, the C'tan then made a proposition to the Necrontyr that they could not refuse. The Necrontyr were offered immortality for the race. Their cursed flesh would be discarded in favour of bodies like their gods, made of living metal. Their bodies would be consumed and their minds transferred into the new metal bodies with which they could continue the war with the Old Ones. Whether the Necrontyr knew the consequences of this is unknown, but their entire race was purged when transferred into the metal bodies. Their minds were dulled and they were drawn into eternal servitude. Only a few of the Necrontyr retained any form of independent thought, but it was much reduced. The Necrontyr were no more, and the Necrons were born.
Those things you're reading would be better classified as slasher fics, but the fact that slashfic already means something else kind of ruins that idea.