Super cute! the game gets a bit hard though but with a bit more tweaking it could definitely be expanded!
Viewing post in Heal the Monsters! (Because somebody beat them up) jam comments
For the Jam going infinite was a great idea!
If you want to continue this beyond the Jam though, I think you could add something more to the core game loop at this point. some way to show progress, either through a meta or through upgrades of some sort. A great way to also do this is to add a story to the game!