Hey I wasn't really able to play the game.
1. Too loud, should probably add some volume sliders, but at least lower the default volume of Master on the Audio Mixer of unity, if you add a slider be careful with the linear to db issue, research about that.
2. Mouse too sensitive, same as above, might want to add a slider.
3. Do you need a numpad for this game? because i dont have one.
Good luck!