Right and Left Arrow or A and D: Move Left OR Right Up arrow or W: Use Locker Down arrow or S: Get out on Locker. Also, this is an spinoff to Endless Doors, so yeah it's coming back for now.
How A-200 Works he will appear after Room 200 he will make a weird whoosh sound if he does Hide as quickly as you can! also listen into to him if you hear a slow echo he its gone if you hear a reversed whoosh then stay in the locker!