I have too much free time
“...eyes and hands first. Impaired vision and slippery hands....”
After his stint in the USMC in the battle of Okinawa and China occupation, my father finished out his service as a hand-to-hand combat instructor at Great Lakes Naval Station.
As a kid growing up, he spent a lot of time showing me how to fight and defend myself because I was smaller than most boys my age. One of the first things he taught was what you said: blinded eyes, broken bones & slippery hands.
FWIW, many times, he tried to get me to actually slash & stab him with a knife....you could forget it....he would take it and mock kill ya with it so fast it would make your head swim. I guess practice makes perfect, and Uncle Sam’s USMC meant serious business back then: Kill or be killed.
:) After my first couple of schoolyard scraps, nobody messed with that “little kid” anymore. He taught me well, and I kept quietly to myself never starting trouble...and do so even to this day at the ripe old age of 69.