have one layer as your main scenario, another one behind (showing the halls) put the doors behind the front layer so they can't be seen when open (up position) , move the doors with 8 direction or bullet behavior, and put a solid object to limit the movement. create variables to check is the door is open or closed when the button is pressed and move accordingly... that's all, you survived, go for your paycheck
I dont quite understand what you mean, tbh im fairly new to this, i did go through the tutorials and such tho.
This is what i got so far, In the gdrive link.