BOSS BATTLE GUIDE:
I beat the boss but died at the cutscene from a sneaky final parry...
I made it the whole night without ever having to do a corruption challenge
but here's what I learned:
At the start of the night wait for one or two goons to use your magic ability on then go to the arcade camera and grab the coin with the skull on it. It will double your corruption but after a few second set it to zero. After that there's only four cameras you need to focus on, the three by each doorway and the back generator (only for energy resupply). For the goons as long as its just them at the door just keep the door closed they cant get in. Only get rid of them if there's a character that can open a door in the same hallway. You can comfortably keep two doors closed without your energy draining too fast but the generator make it easy to recharged. For Nile keep her door closed even when she's knocking and only open it and reset her when you are absolutely certain your hallway is clear and you have the energy. Overall its just a balance of keeping the goons stalled at the doors for as long as you can. RNG dose play a pretty big role in this like when dealing with Nile ide get two back to back parry's and spend triple time staring at her which either let Sammy or the goons in. Also i kept getting a bug where despite me dealing with Poppi bomb id still get and explosion and die to her. Also the goons messing with the door controls raises your corruption so id get too many of those and enter the tentacles phase and at that point it was just game over.
So Summarize tips:
Kill a goon then take skull coin in arcade
Only focus on doorway cams and generator cam
Stall goons with closed doors
Only get rid of goons when a door opener is with them
Keep Nile stalled until safe to reset her
If a goon is with Sammy, Poppi, or Ari just keep the door closed
Balance keeping two doors closed