What I guess is happening, is that the chrome book doesn't allocate enough GPU processing, as all the enemies are rendered through shaders and particle shaders. Which color enemies do you see? There should be red, cyan, and purple.
Good to know, and thanks for helping out. I will add a second sprite for this edge case. It looks like a glitch with Godot rendering GPUParticles on chromebook. I don't have a chromebook, so can't test it out. I'll be able to update it after the jam ends.