Here's a couple of tip's from my own experience that may or may not help you.

1. The basic concept of this game, I believe, is to lure Springtrap away from the office using your audio systems. If, for instance, you see him in cam 8, then if you sound your speakers in Cam 9, he will move to that room. This does not seem to work if you use it on Cam 10 while he is on Cam 9. I was wrong here, you can lure him from Cam 9 to Cam 10, he's just very hard to see on Cam 10. Basically you want to use it one room away from where he is. Also DO NOT use the audio on the cam he is on, as it might make him leave.

2. Be accurate. Using the audio system often causes errors.

3. This game seems to really be about knowing where the animatronic is, moreso then the previous games. When you start the night, immediately find him and keep track of him. Ive been able to get away with watching him at the start of the night on Cam 9 and as soon as he moves use the audio and he will come back into that room. If you see him looking through the window into your office then sound the audio on cam 2.

4. The reaction times in this game are on par with Golden Freddy from FNAF 2, you have to be fast to have any hope of avoiding things. If BB (Balloon Boy) appears in your camera, immediatly switch to a different camera or the vent cam's and you can avoid him disabling your ventilation. This also works on the Puppet, you just have to be fast enough.

5. When you hear the shuffling noises in the vents, find him and shut it as fast as you can, and make sure to preemptively shut the vents near where he is.

6. If he is peeking through the door on the left you can have a staring contest with him and hope you hold out till the end of the night, or use the audio on Cam 1. I've confirmed this to work, credit to FroggyFin for this tip. :)

7. Fix errors as soon as possible, but video isn't as important if you know exactly where he is.

8. When the video goes fuzzy and loud for about 2 seconds it means he has moved away from, or to, the camera your currently on.

9. I have finished Nightmare mode (Night 6) and have nailed it down. This strategy works on every night. It requires a lot of luck, but basically you want to trap Springlock on cam 10, locking the vent at cam 14 (the one that goes directly to your office), and just calling him everytime he leaves (but not when he goes in the vent). As long as you know hes on cam 10 you can ignore any video errors.


Finally for the TRUE ending of the game, and your third star, go to this guide right here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=401914144

BY THE WAY, after you finish all the minigames you can activate any cheats you want and finish night 5 for the true ending screen.


Hope everything here helps, and good luck! :)

Phantom Freddy: The easiest one to avoid, simply don't stare at him.

Phantom BB: When you see him, switch to a different camera as fast as you can. Switching to the vent cams also works.

Phantom Puppet: Same as BB, When you see him quickly switch to a different cam. Switching to the vent cams also works.

Phantom Foxy: Pretty hard to avoid, but if you see him standing there before you scroll too far to the left you can just go back to the right. According to TheDestinyHunter9914 you can avoid him by getting back on the cameras.

Phantom Chica: Like Foxy I'm afraid shes impossible to avoid. She appears when you stare at the arcade hallway long enough (Cam 5) and when you stare at her face on the arcade macine too long.

Phantom Mangle: This guy disables your audio and you have to switch cameras really fast if you manage to see him, chances are though that you won't see him in time. (This guy's not in the extra's menu for some reason)