Thank you for your response!
In the future (hopefully the near-future), more levels and enemies will be added. This game is currently in the very early stages of development. As you have mentioned, we agree with your view on the "polishing" of the game and we will focus on that for the next update.
You may have noticed already, but the game was reuploaded to a web version, making playing more accessible.
Thanks again for the feedback
- TheSoupMasta