You were right- this is short! But there are a lot of things you got right: the art, sfx, and a cohesive story! A lot of people let the sfx, art, and/or story take a backseat during these short game jams, but you included it all and it was great!
I will echo what someone already mentioned - I also had trouble with a few invisible colliders and a few of the enemies didn't have sprites.
The hitbox was giant (I could see it and some of the lines for the colliders for some reason) which was good since I didn't really have a way to attack up or down. Something to consider for the combat would be implementing this. I would also say that adding juice - hitstop, hitflash, vfx on hits, etc - could add a lot.
Otherwise, this was great! good job on this game!