WWE 12

Very simple to get: when you grapple with an opponent, hold the LB. It will give you a HUD map of the opponents body, with the various limbs marked with buttons - A for the legs, X and B for arms, and Y for head: just pick a limb you want to damage and hit that button. Repeat this process 9 times and you'll have your achievement.

Note: If you're just starting out and, like me, you like to try and rack up the easy achievements quickly: there's also an achievement for winning via a submission applied to a heavily damaged body part so, when going for this one, I recommend chosing a superstar with a submission finisher and picking the limb that their finisher works (arm for Alberto Del Rio's Cross Arm Breaker, Head for John Cena's STF or Daniel Bryan's LaBelle Lock, etc.), getting your 10 shots in and, if needed, maybe a few more until you see that body part showing up in red when you hold LB. Once that's the case, use your finisher, and button mash your way to another achievement.

Grapple your opponent using 'A' then hold 'RB' and press either A for legs, X or B for arms, and Y for head.