Thank you so much for this amazing reply!
We are aware of the jank with the spikes and the line renderer. However, our lovely dev @Sourcey is trying his best to see if he can improve it. So I don't want to promise anything but there might even be an update after the voting period.
Also, yes, sadly no audio because time and things. But I would love to work with a real artist(since now us three programmers did all the art) and a musician next time.
I'll definitely check out your game today aswell!