Bag'em Tag'em glitched?
I got a feeling that this achievement is somewhat glitched. During my two playtroughs AI partner threw/stunned one of the opponents numerous times (in my direction of course) I finished him/her off and nothing.
I have even tried to do this one with another controler literally throwing a bad guy right under my feet and still nothing.
Besides what does "in your direction" mean? Does it mean "right next to you" or just "in the general area"?
And does it have to be an one hit kill (the enemy is on the verge - a button icon appears over his/hers head) or can I stomp him/her to death?