[Scorch]

Oh, man! I quit having dreams like that about two years after I got out of the USMC. Try meditation or exercise or something.

My reply to your question would be:
You say you've just been stabbed twice in the chest and you fall down. The assailant retreats. What makes you think you are going to be capable of firing a few shots at them? Having seen people get stabbed, they like freak out, grabbing at the wound, looking at the blood, etc. Stabbed in the chest, they often get really scared and become incoherent. I think you would likely have other things on your mind. Edged weapons have a strange effect on people.

But legally, since the assailant is retreating, I think you would be in deep hooey pretty quick if you nailed him.