I did this by getting a crappy fusion rifle and playing control for a few hours. Go for kills above all else, don't hold points, and keep moving. Most people in control expect you to bunk down after getting a kill and run right back to the point they died at, they don't expect you to keep running and hit someone defending another point. I thought my team would think I was sort of a scumbag for not helping capture points, but we ended up winning most of the time.