If You complete the indicated task You'll get the allotted gamerscore.
Crazy Mothertrucker (35) - Complete Solo Tour on Expert with any instrument
Chuggin' Along (30) - Complete Solo Tour on any difficulty with any instrument
You and Your Gang (30) - Finish Band Tour mode on any difficulty
Every Hand's a Winner (25) - Every band member scores over 90% of notes hit in "The Gambler"
We're Better Together (25) - Score 10 million total points across all songs in Band Tour
Free & Easy (20) - Full band clears "Free & Easy" with 100% notes hit on any difficulty
Make the Earth Quake (15) - Hit 100% of the kick drum notes for any song on Expert
Smooth Talkin' Son of a Gun (15) - Beat "Suds in the Bucket" on Expert Vocals
Star Studs (15) - Earn 75 stars across all songs in Solo or Band Tour
Doggone Drummer (15) - Get a 200 note streak playing Drums
Drop the Hammer (15) - Hit all hammer-on notes in "Satellite Radio"
Can't Take it with You (10) - Band members activate Overdrive a total of 10 times in a single song