nightmare tails and luiginette, as usual, are the main focus while occacionally giving your attention to salvage sonic

you must hope origin goes to either door, and keep checking the vents until you are absolutely sure he is no longer a threat

hope phantom tails and tails doll aren't chillin in the same side ( they can be sometimes, and its rather precise to look away and back )

hope all of the blackout characters ( the toys, withereds etc ) all come in at once or at similar times so that they will leave around the same time

the worst of them is withered toy yoshi since you cant see her and you can barely hear her over the music, so listen extremely closely and if you cant, listen for the light flicker and INSTANTLY put on the mask, no matter what you were doing

hope phantom yoshi isnt in the panel so you can fix the 2 random errors ( salvage coming automatically despawns her, so use that time during a blackout when he is paused to fix the error )

hope salvage won't come too much ( he can sometimes move backwards, which delays his attack for a bit )

and listen extremely closely for the toymare, if you think its in there, then it very likely is, may not be sometimes, but shut the vent to be sure

learn the intervals of withered tails, the plush duo ( plushnic and plushtails if it wasnt obvious ) and nightmare tails

withered tails kills you after 25 seconds of being in the hallway

the plush duo after 12 ( once at phase 4 )

and nightmare tails moves one phase every 11

keep track of these so that 50% of the time you get rid of withered tails and the plush duo at the same time

since you wont need to deal with withered tails as much ( due to taking longer to get him off your ass ) you wont waste as much flashlight battery

keep checking the hallway even after dealing with those 2 ( assuming origin isnt at the doors ) so you wont get a B.S death from origin

if bew is in a cam dont worry, he takes around 15 seconds to kill you, so he is not a threat, you can rewind the whole music box before he kills you

27' golden takes around 5, so dont be afraid to look at him for a bit, though not too much,

always look around the office so you won't get a B.S death from tails doll and if you see him with phantom tails, look away for around 2.5 seconds, and he should be gone

avoid phantom jumpscares as much as you can, since each one drains 5% power, and if one is forced then phantom yoshi will probably be at the panel, so you'll end up losing 10% power ( unless you get lucky and salvage starts coming )

overall needless to say this needs extreme rng,

and although OS-T sans levels of difficulity it is possible without the door bug, limited visibility and phantom ian

just dont expect me to release such a video

thanks for reading and i hope this will help you to beat truly impossible :D