No, haven't killed anyone in my life, but I have shot someone. Didn't kill him, sadly.
It was.....clumsy. I didn't know how to handle guns that time, and it was like...that gun with the rapid multiple shots and it weighed like....SIX TONS. It sent me the opposite direction. And despite having multiple shots and a place with plenty of people to have killed, I only managed to shoot one guy. And he lived. Wow, pathetic. I am not born to kill.