Makes me really happy you enoyed it and that you liked the art!
Hopefully soon! I don't really have any specific release date in mind because there is still a couple of very time consuming task in my to do list for it, but I feel is not too far away from now. I'd probably release another demo (mostly to address any issues and received feedback on this one) and then I would be ready to start adding the extra content a full release would need.
Regarding your criticisms:
● Turning corners totally needs to be more forgiving. I will work on that without any doubt.
● New music is exactly what I didn't finish in time, but is already in the making for future updates.
● A small sound effect is a great idea for the menus, it will be added.
● Instantly closing the game with ESC is something I have been keeping for my own convenience while testing, but doing something fancy with it like holding the key, or having an actual menu/confirmation message is something I should work on too.
Again, I'm glad you enoyed this demo! Thanks a lot for playing and leaving your feedback! Kansha!