You want that achievement for killing me 20 times? You're gonna have to dig it out of my warm, bleeding, bullet ridden body, but just think about it, the satisfaction that you'll get as you hold high your achievement still dripping in my blood and you scream through the headset "Achievement Unlocked!!! Suck on this MarauderMY!!!"
Then I snipe you in the head cause I've already respawned, pickup a sniper rifle, found a good vantage point and fired while you were going through the theatrics.