Horror Game? I Don't Play by the Rules

In an age of eerie resurrections, a horror game traps humans in deadly instances. High schooler Ling Yuan awakens a Brutality System, hunting horrors while others flee. He unlocks three savage forms, crushes instance after instance, and bonds with an SS-rank ghost as his partner. He is dubbed "Instance Shredder." When Nightmare Hospital invades reality, he kills the final boss and saves the world, becoming humanity's strongest pillar.