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

I Understand About Competition (20 points): 5-Star "Peace of Mind" by Boston using Vocals or Guitar on any difficulty.
Robbin' Banks With A Six-Gun (20 points): 5-Star "Take the Money and Run" by Steve Miller Band using Guitar or Drums on any difficulty.
You're a Star-Belly Sneech (20 points): 5-Star "Holiday in Cambodia" by Dead Kennedys using Bass or Vocals on any difficulty.
Don't You Wait or Hesitate (20 points): 5-Star "All Right Now" by Free using Guitar or Vocals on any difficulty.
Some People Call Me Maurice (20 points): 5-Star "The Joker" by Steve Miller Band using Guitar or Vocals on any difficulty.
Each Must Know His Part (20 points): 5-Star "Closer to the Heart" by Rush using either Vocals or Drums on any difficulty.
What Your Girlfriends Say (20 points): 5-Star "Can't Stand Losing You" by the Police with a full band.
Just Another Band Out of Boston (30 points): Gold Star "Rock and Roll Band" by Boston with a full band.
Flawless Groove (20 points): Score 100% notes hit as bassist, up-strums only, on Expert.
Flawless Fretwork (20 points): Score 100% notes hit as a guitarist on Expert.
Flawless Singing (20 points): Score a 100% rating as a vocalist on Expert.
Flawless Drumming (20 points): Score 100% notes hit as a drummer on Expert.