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

  Complete The Game (25 points): Finish the game by defeating Mother Brain. 
  Dark Force (25 points): Defeat Dark Force. 
  Level 30 (25 points): Advance one of your party to Level 30. 
  Where Credit Is Due (25 points): Watch the entire in-game credits roll. 
  Hidapipe (10 points): Use a Hidapipe. 
  Escapipe (10 points): Use an Escapipe to escape a dungeon. 
  Level 20 (15 points): Advance one of your party to Level 20. 
  Oh Dam (15 points): Open all four dams. 
  Oh Yeah! (15 points): Acquire the Laser Cannon. 
  Level 10 (15 points): Advance one of your party to Level 10. 
  Nido? (10 points): Reach the Tower of Nido. 
  Big Spender (10 points): Spend 1,200 Meseta on one item.