Pretty neat concept but yeah, it seems there was a lot left out. For example, it's pretty easy to just skip over enemies by falling to the final platform immediately. That said, the combat was really fun once I got the hang of it, and I think it'd be really cool to see a more complete version of this.
Also at one point one of the enemies fell on top of me and started teleporting in and out of the screen, that was legit terrifying lol