There's no direction or objective so I'm not entirely sure what I'm supposed to be doing or what the purpose of the neighbor returning is since nothing changes after that (even though it's only 10 seconds).
You can't jump on the stairs, making them basically one way and impossible to climb. I'm assuming you have some sort of system that detects what the 'ground' is to see whether or not the player can jump (not sure if its a raycast or a mask or what) - this should be applied to the stairs too.
Spritework is cute though! I like the little spider at the start, even though one of the only interactions is killing it.