I just got through with a Bullet Spawning system for Godot that ya'll may find useful (along with some other useful generic code), I'll be using it and you are all free to as well.  You can check out my whole module library at my Github here.

Thanks dude! I haven't used Godot in a few years and this is really helpful for rejogging my memory.

Hey ! Now I discover more people made bullethell resources for Godot :O

I made a complete Bullethell plugin for Godot with full documentation! https://bottled-up-studio.itch.io/godot-bullethell-plugin Also giving it to those who'll find it useful.