i set a path for you towalk into a cave full of people running around in the darkness of the cave with knives sellotaped to thier chest. you WILL be stabbed.
I sellotape so much knives to myself that everyone nearby will be stabbed on contact with ME. Then, I enter the cave. Everyone else is stabbed. Then I try to go out, trip on someone and on contact with cavefloor the bluntsides of the knives stab into me. This was even more painful than being stabbed. OW.
I place a giant pot of molten cheese and butter on some thin stilts above some area and add a tripwire to trigger this.