Hey, I think you game is looking very promising. I'm getting some Hollow Knight vibes :). The mechanics are solid, sounddesign is nicely done, art and lighting on point, and I really love the charakter design.
I'm definitely missing some music here though, and I would keep the sword sounds centered in the panning (and I will stop the audio nerd talk here ^^)
Some details can be improved, for example the melee responsiveness as well as the enemy attacks. Also I somehow managed to kind of break the Lumi launching (which I quite like).
Over all, In my opinion, it is definitlly a very promising and already nice looking game, keept it up! :)