Yeah, unfortunately I never properly finished the credits page. I should probably fix that.
As for the demo level, yeah there's not a whole lot, it's just that one little section. I didn't exactly manage time well during the jam and didn't get to make a whole lot, so most things are just examples of concepts, like grinding on the flint to regenerate health. At the end of the section if you touch the brown blocks it'll play more music that our musicians made for the game!