I finally beat
ALL-20 Mode on the first one. Took me hours to do lol.
The only CAM you need to check is CAM-1C, where FOXY is. Because keeping it there will cut down how many times FOXY Charges You. FOXY only Charged at me once when I beat it.
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When CAM-1C looks like this, that means Foxy's coming.
Check CAM-2A for a split second and you'll see FOXY Running down the hall. Then quickly close the Camera, and close the Left Door. Foxy will bang on the door 4 Times, but after the 2nd Bang, you should be able to open it.
And before you turn away from the left door, check the Door Light to make sure the Bunny isn't there.
Whenever you put the Camera Up, make sure the Right Door is Down. Because FREDDY can pop up from that side at literally any moment when it's open.
And when you close the Camera, you can open the right one again. Check the Door Light for that door, if the Chicken's there, close it. If it's not, then you're clear to check the Left Door.
Then quickly check the left side using the Door Light. If the Bunny's there, close the left door. If it's not, go back to the right side, close the Right Door and check the Camera again.
And Repeat that cycle throughout.
It's not easy. Because one slip up can, and likely will, throw everything out of whack and you're basically Fucked.
The good thing is, if the Bunny or Chicken appear outside your door, they don't stay long.
If you need to actually watch someone do it,
https://www.youtube.com/watch?v=k5E4ZJQoNrA Bigbug
https://www.youtube.com/watch?v=s5GfhGFVCFE Markiplier