If it weren't for the description, I might even rate it higher. It's neither interesting, nor particularly fun and the experience is not at all awesome. As your first project, however, I think it's okay and you can be proud of it. But I think you're a little too proud because charging $1 for this steaming pile of dung is nothing but a fraud.
If you really wanna make and even sell games I think you should look into what makes a good, hell even a mediocre game. Keep track of the score, add a goal, don't spawn enemies mindlessly from two directions. Make it actually interesting. There is a lot to do if you really want to make this into something remotely worth playing.