I made an entire new itch.io account just to say that this might've been my favorite indie experience of this year to play, even if it IS just a demo.
I have my gripes, especially the lack of any native controller support (yet?) and the nuances that the game kinda forces you to learn about the hard way (like the armored enemies with weapons needing to be attacked from above/behind or with a high speed dash, for example), but that's just my experience as a literal just-beginning player, although I'd like to recommend the tutorial be altered ever so slightly to display your keybinds in addition to the action names, to help reaffirm and help the player memorize what keys to press to do what action. I kept fumbling my keys trying to do different things for an embarrassingly long time 'cause I didn't really have them memorized yet.
Again though, that's kind of a noob-gripe of sorts. It's really not the kind of issue that a proper experienced/skilled player would run into, so take it with a grain of salt.
Aside from all that though, it's still a really, really well polished game, and if you told me it was a long-lost Pizza Tower update rather than a mere fangame, then I'd 100% believe you. It's great.