Wow very large response. Thank You.
1) Yeah I realised that is the origin of the sprite and I have already fixed it in a new version.
2) Good point, I hadn't though improving the difficulty.
3) I think not, maybe is colliding with the walls.
4) Yeah, I liked the music but definitevely doesn't fit too much
5) Really? I drow the player by myself and I though nobody would like it. lol.
Thanks again for your positive critical review!