Complete the following achievements to unlock Xbox Live Gamerscore points.

-Completed Training (10 points)
  Complete the Single Player training mode.

-Combo x2 (15 points)
  Kill two opponents in rapid succession.

-Combo x5 (20 points)
  Kill five opponents in rapid succession.

-Challenge x15 (10 points)
  Defeat fifteen opponents in Challenge mode.

-Challenge x50 (25 points)
 Defeat fifty opponents in Challenge mode.

-Won 10 Matches (10 points)
  Win ten matches in Single Player or by playing on Xbox Live.

-Won 50 Matches (15 points)
  Win fifty matches in Single Player or by playing on Xbox Live.

-Won 100 Matches (25 points)
  Win one hundred matches in Mission Mode or Battle Mode.

-Complete Mission Mode (20 points)
  Complete Mission mode.

-Played 100 Matches (25 points)
  Play 100 matches either offline or on Xbox Live.

-Marksmanship (25 points)
  Score over 10,000 in the Shooting Range.

-Six Degrees of Small Arms (0 points)
  Play online.