I have sucked in destiny for a while but then I finally gave myself a kick in the pants. First I changed my primary. The best gun to use is an auto rifle. You also must conserve you heavy ammo. Only use it with close quarters with a machine gun and when you are in big groups. Special weapons are important as well. Shotguns are good when you have a player with higher agility. With that you an sprint all around the map and shogun people. Sniper rifles should only be used when there are vehicles or turrets on the map. Another thing is crouching. When you crouch people can't see you on the movement map. This is effective if you hide around corners. Another thing is your grenades. I have seen many people use it incorrectly. Only use it when you are near a zone or there is a large group by. Also use it to get people around corners