I'm not very great at these games, but it was fun and well made. As pointed out in other comments, some more feedback (screen shake, sound effect, etc) when the player does something right or wrong would go a long way. I'm not sure if there is an ending but if there is, adding your progress (percentage completion) would be a great way to get people to keep trying to get a little bit further. Otherwise, congrats on your first full game! You've done very well.