If you want to cheat you can use cheat engine but I think beating it properly makes you feel better. My strategy for the characters is as follows, Chica and Bonnie are pretty straight forward but I recommend listening for their footsteps rather than checking the lights so you can save power, Freddy is on a timer so I'd recommend setting a timer to see how long she takes to kill you and then using that timer to know when she will get you, foxy is the biggest pain in the ass, you need to look at her for longer periods I'd recommend 5 seconds off cam and 4 seconds on, if she's not at her cove then don't check the camera, instead listen for her running footsteps and then close the door. If she knocks on your door 3 times then that's OK, more than that however and you may as well restart.