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

  A Lonely Victory (20 points): Clear Episode 1 in 1P Play. 
  A Temporary Peace (20 points): Clear Episode 2 in 1P Play. 
  The First Step (Episode 1) (10 points): Clear the first 10 rounds of Episode 1 
  without continuing. 
  Certificate of DOH (25 points): Clear the first 30 rounds of Episode 1 without 
  continuing. 
  The First Step (Episode 2) (10 points): Clear the first 10 rounds of Episode 2 
  without continuing. 
  Certificate of Bones (25 points): Clear the first 30 rounds of Episode 2 
  without continuing. 
  A Trustworthy Friend (10 points): Clear an episode with the assistance of a 
  friend. 
  The Mock Battle Specialist (15 points): Defeat the computer. 
  The Real Battle Specialist (15 points): Combat rivals from around the world! 
  The Master Marksman (10 points): Destroy large numbers of enemies! 
  The Nimble Vaus (20 points): Master the Mini-Vaus! 
  The Piercing Light (20 points): Master the Power Laser!