For a basic click'em up, this one's actually a strong contender! The use of light makes it an interesting and difficult game.
That said, I do echo what the previous commenters say. The game should pause when you're making upgrade decisions, and the feedback on losing health may be a little too subtle.
It's honestly not bad, and you've mastered a lot of basic concepts for Godot. That means you're gonna need to shoot even higher in January!