The character designs, overall artwork, concept and gameplay are all pretty good. The arena could definitely use some tweaks to the visuals though just to help separate background and foreground, right now it all sort of bleeds together, it never directly hindered gameplay, but, as more enemies spawned in it became a lot to visually deal with. The UI similarly is a bit much, I think scaling it down or simply just positioning differently would help a decent amount, as would zooming the camera out a bit. All in all it's a pretty fun game though and an impressive 48hr showing, nice work!