Game is fun! I like it! Graphics are detailed for a demo, and has a nice feel movement-wise. Honestly, if you add some more enemies with different attacks, some more characters, additional scaling, added some minibosses, and then tied it back in with rouge-lite elements, I can see this being a solid title! Would definitely thrive on Xbox Game-Pass, and PlayStation Plus if ported there.
Doesn't... fit my screen size though, so I feel like I'm missing out on... gameplay elements. This is what my inventory looks like. 
(my screen size is 1366 x 768)