NOTE:
The key counter up the top left of the game does not work. It will always display a 0
To get a key, you must interact with a pile of rubbish 10 times and you will hear a chime sound. Once you get four keys/chime sounds, the main door will open and you will be able to escape.
The bar up the top of the screen is the humans wakefulness gauge, once that is full the human will come out and chase you. The bar automatically decreases.