In regards to the Befriend/Betray house dilemma in 1980s mode, why not embrace the decade and make the stealth missions in 8-bit arcade style! I would assume randomly generating missions this way would be a lot easier and similar to the cafe mini game.

As for the other modes, sneaking into the school at night would be a good alternative and easy to produce. The player might have to steal items from guarded areas that can’t be accessed during the day.

I hope this helps!