You meet the monster - you die.
You collect the key - you die.
You hit a wall - you die.
You hit monster poop - you die
You go to the house - you die.
Screen boundary - you die.
You guide the monster to the key - it deletes it
It's clearly not a AAA game, and quite possibly a heavily bugged type-in, but now that I've stumbled upon it I HAVE TO KNOW!