Enter the Backrooms, where nightmares have names. From the eerie Facelings to the monstrous Thing on Level 7, Master Sergeant Reynolds gives you the survival briefing no one else will. In this video, we break down the 10 most dangerous Backrooms entities, their horrifying behaviors, and exactly how to survive an encounter. Some are unsettling background creeps, others will hunt you without mercy. Flamethrowers, bug spray, Claymores, even C4 chandeliers—this is Marine Corps survival training in the Backrooms.