The quest really isn't that bad. Not as bad as thorn on a hunter was. I have a .9 kd and I did it in a couple hours. You only have to have it equipped. Heavy, special, and super kills all count. And you get bonuses for streaks. So play super campy and get your super meter full, then go for a good streak. Time it so you can get heavy too after you use your super. And if your playing a good team just stop using last word so u don't lose any ground.