really well done on this situation. everything is so polished. The art, the sound, the animations, the UI. Also I will mention the movement and shooting mechanic is smooth and kind of addictive.
One bug I encountered was when I died in my first try I had to restart the game to get the enemies function again. If I didnt restart the enemies didnt shoot and after 2nd wave there were no more waves. but once I restarted it worked fine. I guess the issue is with the game loop. The other aspects are well done. Great Job. I had fun playing it and beating that high score everytime