Slenderman must die: Underground bunker

It is a requirement that Slenderman must die in the underground Bunker. There are hidden clues to find him. Prepare your weapon. The game features a dungeon with 8 hidden clues and a maze of corridors. It's a good idea to use a flashlight in the room. Relating: collect useful items. Shoot if you can to protect yourself from the monsters. Try to survive in this dangerous place if you can find evidence of Slender.