its a good puzzle game if u have time to finish it. my suggestion is that 4 direction below cube is the same so player can't know what is the right direction
everything is good for 9 day game dev, its will be better if have some item that player can pick up when killed enemy. But i didnt see the theme of this game jam :<
about "I think my only big suggestion would be that the enemies felt a bit too, smokey? Like, non-substantial and kinda hard to see when things get chaotic in the later levels", u can buy 'clear all enemys' item in the shop lol 🗿☕