Thank you very much for such detailed feedback. It really helped me a lot. I just updated a version to see if I can change the problem of mouse shake. Regarding GUNNER, it may indeed be a big threat for players. I have significantly reduced GUNNER's damage and fire frequency. I will continue to see if I can find a balance between fun and difficulty. Thanks a lot!
Could you help download the latest version and see if the mouse issue is resolved?