Beat 1-6, beat 1-9-8-7 mode, beat 6-9-6-9 mode beat 20-20-20-20 mode, and get the golden Freddy and donut easter egg jumpscares,
hints: donut in the office, spam press Freddy
Leave the camera on the cove, when Freddy is at bottom right camera keep the right door closed, don't use lights: there are sound cues, when you flip the camera anyone at a closed door will leave, and Freddy will laugh when she moves, she will go from the right room to the right hallway only, so you don't need to watch the cameras except for foxy, and most importantly:
Stop playing with one hand.
Hope this helps! ^w^