Love the art style and I like the unique approach! I think highscores would be great and I recently had to learn how to put in highscores so if you need a hand feel free to PM me.
I would also agree about the character upgrading being confusing, maybe format the instructions since it looks a bit like a wall of text atm and it's not mentioned in game. Anywho good game!
Sweet game, really love the chill soundtrack. Only thing that comes to mind is perhaps a bit of text in the instructions explaining the gems, since they don't contribute to the score. Gonna try this later with a ol' Joystick.
Thanks all, I'll get to work on audio options and quality toggler along with some new worlds/level select right away. Got all the assets ready, so feel free to check back soon (and jump to whatever level you left off at of course)!
Thanks for the reply =D