Hey, thanks so much for the feedback! You're right, there will be a lot more rooms added in the future (as well as different level types), and a lot more "things" to do hopefully :) This demo was mostly about getting the basics working. The idea will be that the first couple of levels will be smaller, mostly just caves with possibly a few enemies and items. Then later levels will introduce more and more "weird" stuff :)
Thank you for providing the screenshot for the background issue, it's because the back wall is not placed high enough, I'll fix it. And yeah I'm aware of the weird animation bug, it's on the list too!
Thanks again for trying it!