a friendly trick to all nice people here: did you know you can decreased animatronic health ? just open folder FIGHT and set animatronic skeleton HP to 1 meaning ANY damage you deal will kill it instantaneously thus you can easily farm scrap for upgrades and parts
just check on foxy every 20-30 sec and listen for other girls you should heard when each of them is near door as for freddy when you heard laughter lock door and wate few sec this should be enought to finish night 3 :)