Funny how you made the art using basic Unity shapes. However, the mouse sensitivity is pretty high, making it quite hard to aim. It was also too difficult for me in general (even on the lowest difficulty) to defeat the bug.
I, too, realized that the sensitivity was too high when I playtested it so I decreased it by 60% (it used to be even worse) , then I also added a sensitivity slider in the pause menu (press tab).
