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

  Studious (10 points): Study the basics. 
  Birdie (15 points): Stay under par, like the pros do. 
  Dexterous (5 points): Demonstrate your chain skill in Action mode! 
  Completionist (25 points): Leave no puzzle unsolved! 
  Cooperative (15 points): Put your friends to work too! 
  Perfectionist (25 points): You can do better than just finishing those 
  puzzles! 
  Good Citizen (10 points): In multiplayer settings, it pays to be civil. 
  Competitive (20 points): Rise in the ranks! 
  Frugal (20 points): Keep your stars for later. Be thrifty! 
  Gel-Raiser (10 points): Head online, and take off the gloves! 
  Fashionista (25 points): Stay tuned to the Item Shop year-round for new 
  couture! 
  Collector (20 points): Collect all the costumes!