You have to get out of the building Freddy's in. To leave the building, you have to collect the Faz-Wrenches that are scattered around the building. The sound coming from the Faz-Wrenches will serve as your navigation to find them. Don't get caught by Freddy. If he sees you then run as fast as you can!
Computer controls: WASD - Move C (hold) - Crouch Left Shift (press) - Toggle Run/Walk Tab - Pause Mouse movement - Rotate camera You can also play with the touchpad on your laptop, but I recommend increasing mouse sensitivity in game settings. Mobile device controls: Left part of the screen - walking control Right part of the screen - camera control