I could see this being iterated on, because the basic visual design is kinda nice (even though it needs more variety), and I liked the sound, but as mentioned by octogoon, it needs some balancing.
Other than that I can clearly see what you were going for, but (I assume) couldn't reach in the short time. Anyway, you made a functioning game, with sound, multiple levels and a menu in just a week - that's quite the achievement!