Congratulation for finishing your first game!!! I would say this is a very good start, and believe me, you will be much more better from now. And if you just started, game jam I think is a very right place to go as your first step, 'cause you'll learn a lot in here. Try a few more jam to learn about the tools you're using, making more little games and you will improve a lot in no time. And the fact you can make it in just 1 week shows that you're actually very potential in becoming an game dev yourself.
About the game:
- You can try to make the bullet after collide with the enemy can be disappeared, or maybe a health bar to show how much health does the enemy have left. This way, the player will have more understanding and get a more instant feedback from the game to see what's going on. If you don't know how to do so, Google is always there for help, and don't hesitate to do so.
- About the art, you can always get free assets from the internet so next time you can do so if you are currently lack of time.
- Good music!!! Niceeee
- I really like the gameplay, and like I said above, more of the instant feedback will make it better to play.
- I don't think this fit the theme well, but overall, it's fun, and that's what matters, right 😉
Keep it going, and I think you will be very good very soon.