Both were intentional. I couldn't implement what I wanted with zoom in and out. The floor texture made the experience dizzy. I couldn't decide for better texture.
The firing mechanism was intended to fire 3 bullets in first space tap. If you keep pressing it fires single rounds. I wanted people to keep tapping instead of keep pressing. The game needed more tweaks but I was out of time. I am a beginner in unity, I hope I will get better :)