Thanks, I wanted to create something small and fast while also learning Godot. I think I learned a lot with this one.
If I did continue it, I feel like using arrow keys to choose where to shoot in 8 directions is very limiting in a way because it's just one bullet and that can easily miss and be frustrating because you missed an enemy just slightly. I wonder how to fix that. Possibly make it a cone shape or something and allow any enemies in that cone count as a hit or multiple bullets.
The part without hurting space life was just something I wanted to experiment with because I'm majorly influenced by Undertale, and I wish I could have expanded on it somehow in a combat heavy game instead of an rpg.