I did a few times and I can do it again. I turn on player hud so I can see which rampage body part is severely damaged, trying to destroy anything healthy then move to destroying another body part heavily but not completely. He'll be so beat up he cant move normally and he'll be easy to control on the ground if he tries to get up. Don't forget to never strike a heavily injured part anymore or it could end as a knockout. Just wait for round time to expire and win. lol.