Main stalker: He'll move around and if the screen goes red hover over him for at least 5 seconds, or else you'll die. Stalker 1: He'll spawn clones and the flashlight will flicker. Hover over the clones to get rid of them, make sure to get all of them in time or you'll get a strike. 3 strikes and you'll die. Stalker 2: He drains your power and he flickers the light. Make sure to hover over him to get rid of him, and if you run out of power you'll die. Batteries replenish your power.