Hey, thank you for playing and for giving a such detailed feedback! I'll surely add controls after the jam, but custom button mapping is such a huge task to do for a jam game (I haven't seen any jam game with custom button mapping on every jam I have participated). I'm also planning to show the combo score on 2 and above (cause right now, it only shows 5 and above, similar to downwell).
So yeah, thank you so much for giving me this detailed feedback. I really appreciate it :)