Accomplish the indicated achievement to get the corresponding number of 
Gamerscore points:

  Dish Best Served Cold (5 points): Successfully counter a shot in Story mode. 
  There's Always a Catch (5 points): Catch a ball in Story mode. 
  Neo (5 points): Dodge a powershot in Story mode. 
  First! (5 points): Win a match in Story mode. 
  Plunder that Booty (15 points): Complete Pirates Story mode. 
  Chuck rules! (15 points): Complete Ninjas Story mode. 
  28 Minutes Later (20 points): Complete Zombies Story mode. 
  Reboot (25 points): Complete Robots Story mode. 
  Addicted (30 points): Win 20 Ranked Matches. 
  Just Getting Started (10 points): Win a Ranked Match. 
  Ball Hugger (30 points): Catch 20 balls in Ranked Matches. 
  Untouchable (35 points): Counter 30 shots in Ranked Matches.