As for the elbow: A & D are for the doors, the cursor will also be useful. Unlike the later Fredi's projects I've made over the course of some months, they do not run on energy. HOWEVER, they cannot be closed all at the same time - only one door can be closed per use & they remain like that for a short bit before opening back up just as fast. There are 5 creature-matronics to be aware of in here: Fredi, Buń, Cheeko, Codename: Pirate & Guldyn Fredi. The 1st 4 will require doors to be shut on their ugly-as-sin faces (Buń goes to the left, Cheeko - the right, Pirate - also the left, but way faster, Fredi - both ways). Guldyn Fredi will appear every so often in your office & will have to be clicked on. Everyone but Guldyn will attack more often the more they're fended off.

The whole entire thing lasts as long as its namesake. It should also be beatable (as I have playtested it before releasing it back then & I managed to do it succesfully), albeit be careful with the door usage, since only one can function at a time.