The projections are just the Godot quad meshes. Since it will get projected, you won't really need a much more complex mesh. The shader also builds the shape, and the whole animation. Apologies for the stutters on first playthrough, it was an oversight of the .remap Godot appends (I forgot to trim) to files on export builds hence causing the shader caching I did to not work lmao and I didn't really test it that much since I didn't want to clear cache on my browser for some reason.
And yep, I'm hearing the game was quite challenging even after all the nerfs to the boss lol but I appreciate you playing and giving feedback <3