The Flashlight is a crucial defensive tool, activated by holding 'S' (or 'Z' in some versions) or clicking the flashlight icon. Unlike the first game, the flashlight in FNaF 2 has a limited battery, indicated by a bar at the bottom of your screen. Its primary uses are:
- Deterring Withered Foxy: Repeatedly flash Foxy in the main hallway to force him to retreat. This is his only counter.
- Checking Hallway & Vents: Briefly flash the main hallway and the left/right vent openings to check for animatronics.
- Deterring Golden Freddy (Hallway): If Golden Freddy appears as a floating head in the main hallway, flash him until he vanishes.
