Every one of the 50 achievements for Rock Band 2 on the Xbox 360 is listed here. Solid Gold, Baby! (25 points): Gold Star a song. The Bachman-Turner Award (25 points): Maintain deployed Overdrive for 90 seconds. Flawless Fretwork (25 points): Score 100% notes hit as a guitarist on Expert. Flawless Guitar Solo (20 points): 100% a guitar solo on Expert, using only the solo buttons. Flawless Drumming (25 points): Score 100% notes hit as a drummer on Expert. Flawless Singing (25 points): Score a 100% rating as a vocalist on Expert. Band Savior (20 points): Be a savior three times during a single song.