This is amazing!!! Not only that you managed to make it 3D but you also introduce the past of the side-characters from the main story. Also keeping it side to side as MC. Damn this whole things story is better than most of the payable game ones. Keep it up we love you and your work :D
it should become harder faster. Even thou that it haves 500 lvl to start getting hard at lvl 100 is bad becouse most of the players will get bored and eventually drop the game. (i finished the demo and it's nicely done game btw)
this game isn't really difficult if you have unnatural thinking!!! after 3/4 easy levels comes 1 really hard (like lvl 16) 4/5 (becouse the sound can't be muted)