Rock Band 2 achievements

Completed all fills at 60BPM or higher, or half of the fills at 140BPM or higher

Beat the Impossible Guitar Challenge

Beat any Impossible Challenge on Expert

Defeated the last player that defeated you in either Score Duel or Tug of War

Completed either 25 Challenges on Hard, or 10 Challenges on Expert

Was a savior 3 times during a single song

Earned more than 1,000,000 points in a single song

Maintained deployed Overdrive for 90 seconds.

Scored 100% notes hit as a drummer on Expert

Beat an instrument-specific challenge while playing another instrument

Scored 100% notes hit as a bassist, up-strums only, on Expert

Scored a 100% rating as a vocalist on Expert