Since I've been playing, I tried the casual attacks against the neighbor.
Such as throwing a prop at him or otherwise hitting him with the slingshot or bat, but either does not do any stun damage towards him.
It can be a bug but it's feels really not like HN without that.
So my idea has pretty much been explained. It's to make the bat, slingshot, or throwing props do stun to the neighbor on impact.
One thing I'm thinking of is that Brave can spam hit the neighbor with the bat. So maybe the neighbor becomes more resistant everytime he's hit with something towards a character, goes towards all of the characters.