What class are you using? Your void subclass will help a lot, unless it's a hunter. If you don't have a void primary then a good void shotgun will work. A void sniper will take longer. I prefer a void machine gun since you can usually get more kills with. Second, take your time and learn the maps. Find an area that works for you and camp there. Make your kills come to you, learn to ambush. Last, don't look at the bounty counter. It will mess with your head.