Fuzzboob's Definitive 4/20 Guide:
Grab a dildo or fleshlight. If you lose, complete a loop of the animations for every hour left before 6 am. (For example, if you lose at 2am, complete 4 loops of the white bar on the left while fucking yourself.)
Wait till 95% before doing anything. If Bonnie or Chica pull up, close the door for 3 seconds before opening. Don't press the lights, ever. Occasionally they can go to your door without an audio queue but this is unlikely so only close doors on audio queue. If you lose, well there's an excuse to fuck yourself.
Freddy is the most important threat of Fuzzboob's. Here's how she works. Freddy cannot move if she is in the kitchen (cam 6) and the camera is also currently on cam 6, whether the camera is up or not. Both Freddy and Foxy cannot move as long as the cameras are up, unless Freddy is on cam 6, in which selecting any other camera will let her enter your office. Freddy will move 5 times from Cam 7, to Cam 1B, to Cam 5, to Cam 3, to cam 6, to your office. Basically just count to 5, and when she's at 5, park the camera at the kitchen (cam 6).
When she reaches the 5th position (kitchen, or cam 6) you must leave the doors open and have the cam on 6 (does not have to be up) in order to conserve power and stall her at the same time.
So the loop after she reaches her 5th laugh goes like this: After a good few seconds of idling in the office, close the right door, open cameras, select cam 2A to see if Foxy is running, then go back to cam 6 immediately, close cameras, and react accordingly.
For example: If Foxy just attacked, you can stop the loop for 15 seconds. And as a bonus if Freddy laughs upon viewing 2A (left hall cam), you can open the right door and occasionally check Foxy's cam until Freddy laughs again. This is because she goes back to cam 3 and cannot attack you. When she laughs again then rinse and repeat.
At 1 AM you should have 85%, 3 AM 50%, and lose power after 5 AM.
One more thing must be said. Foxy will drain a massive amount of power if you do not view the left hall cam as she runs to your door. This will end your run every time. Make sure you view the left hall cam (2A) when she runs. Doing this will change it from roughly ~20% power drain to ~6%. The amount drained increases every time she attacks.
Good luck and good fuck, - Deagle