So in that scenario, what if the victim sucker-punches the attacker in the face? What can the attacker then do to better protect himself?

It’s interesting that you’re drawn to the point of view of the attacker.  You would like the turn of the table. Okay, the latest Chad Flenderman novel... written from the point of view of his nemesis, Dr. Lucifer Wu.

All right, well, let’s try one simple technique together. Okay, why doesn’t everyone stand? Okay, so... you’re being attacked. You’ve got your hands up. Simple palm strike to the chin. Up to the chin. One, two.

One, two.