I've had two attempted break-ins at my house in the last 12 1/2 months and I experienced tunnel vision and auditory exclusion too an extreme during the first one. There was a huge adrenaline dump, but I managed to arm myself, get dressed, call the police and keep watch of the entry points without any trouble. It seemed to me that I was extremely focused. I couldn't go back to sleep for 4 1/2 hours afterward, though. I know some people get sick after a huge adrenaline dump, but I didn't. I did however start crying about 1/2 hour later. It took me a minute to figure out it was because of the adrenaline.
The second time was different. I was mad and there wasn't much adrenaline.