Yeah, Jaywood offers some good tips. Assault rifle is real good in CQB situations but at any range, you should be using a BR or DMR (this is my favorite at atm). Also, pay attention to the other player's shield popping as it only takes one more round to the dome to finish them at that point. Keeping your sensitivity low can help you a lot with accuracy but at the cost of being able to turn fast but IMO it's a good trade off if you play mostly at range. Also, one of the most noobly things to do is to run around a corner chasing someone. Any half way decent player will have a grenade waiting for you as you round the corner and have you in a prime position to get finished. Learn the radar,stay close to teammates and bow out of situations that you know you can't win. Also Thruster Pack or Hardlight Shield will save your ass. I really like staying close to cover for any distance battles with people and if they are getting the better of me and my shield pops, I thrust behind the cover and recharge. Frustrating for the other player I'm sure.
I LOVE paying for Xbox Live! I also love that my love for it pisses off so many people.
