You need some kind of sound to notify people when they are about to die. Twice I was at around Floor 80 when I didn't notice how low my health was and died. Because of that 4/5.
God, I love burning every peace-loving, poo-eating, cow-smelling, pee-drinking, salad-eating, French-looking hippee in the god damn world! Oh yeah, and roasting marshmallows!!! :D