Cameras: When nedd's questions come up, answer it quickly. It is good that you use the Mini-pad of numbers (make sure that "Num lock" is active).

If it takes too long to respond, punch the meggies and put on the mask.

Ventilation trap camera: keep the camera there for the rest of the night; and support it if there is a robot (Milhouse, Old Barto and Old Liza).

Make sure to put on your mask BEFORE looking at the office again

Flashlight: Try to charge the flashlight when Nedd's question appears but don't keep it in the plug for to long your New Krusty will kill you.

Office:

Check the corridor from time to time, if old Marje is there (looking at you), flash her a few times, until she lowers her head (if she has her head down, she is temporarily disabled).

Move the mouse all the time to avoid the Dark Homer, if he catches you before 5 am, restart the night (he doesn't kill you, he just breaks the plug, and yes, you can survive an hour without charging the flashlight).

Every time you look at the office again, flash "Shadow Marge", this is her position.

New bots: Keep them fixed all night, so you don't have extra danger (and if you have beaten 12/10 mode, in ftah 1, you have 5 bonus tickets, which you can use for the bots to help you).

This mode is very frenetic and difficult, and I can't say that you will beat this mode at first try, but I hope this help you good luck.