I downloaded the demo but couldn't see much point in it, there wasn't much to do as far as I can tell and the enemies were overbalance. There were also bugs it kept saying I was missing certain png files or audio files or something, I just kept clicking ignore and it'd let me move on but the text message would later reappear. Not much I can review or feedback on.
But it can have potential to be a good game, depending how you present it and what the characters can explore in the world.