Really fun and playful concept! I quite enjoyed trying to get the cute little demon to heaven.
My biggest gripe is that there seems to be an issue giving the devil his coffee (seems to be the only thing he asks for as well). I grab the coffee and go to him, but nothing seems to happen. Maybe i'm doing something wrong or something isn't clear. I don't know.
I also think, for such a relatively simple game, it's a little on the short side. Would love to see more of the demon's journey. What happens after he leaves the house? Maybe he tries to get on a train, but conductor refuses to leave unless you pack it with people. Then you get an elevator, but you can't use it, because it's packed with people, so you have to empty it.
I guess what I'm saying is, this demon is too cute for his journey to end so soon! XD
Anyway, wonderful job and hope to see you in future game jams! :D