With three boosting buddies, have each member of the party kill another member of the party... EVERYONE will get this achievement after the timer ticks down to 0...as long as each member gets only one kill and only dies once. Note that this is a solution for boosting cohesion, and is not overly sporting. I can also attest that this method works as myself and 3 other TA members all gained this achievment from this method. We developed this concept after the servers refused to let us all into the same deathmatch for over 35 minutes, and we decided to try to maximize our efficiency with a draw and pray for the best... it worked.
Edit: It has been brought to my attention that you will still get it for all group members if the score remains zero. Thanks to D4RK I FuRy I for the input.