Nice idea, the limited aiming as said before me could lead to some interesting challenges (although not having a direct upward shot felt a little strange). I think it suffers a little from a lack of enemies in some places but I definitely understand not wanting to throw the player directly in at the deep end from the getgo. A shame there wasn't any music but with a soundtrack and some textures on the same level as the spritework (which is awesome, really love the style) this could develop into something really cool