Here is the full list of achievements for Rock Band 3 for the Xbox 360:
Accountant’s Dozen (15 points) – Beat 12 downloaded songs
Alex’s Luggage Combination (30 points) – Beat a Rock Band 3 score of 12,345,678
Bass Apprentice (20 points) – 5 Starred on Easy Bass (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs
Bass Streaker (10 points) – Get a streak of 500 notes on Bass
Best. Name. Ever. (5 points) – Rename your band
Bleeding Fingers (30 points) – Get 85% on all Guitar Solos in Rock Band 3 on Hard or Expert
Complex Chords (25 points) – Complete the “More Chord Holding and Arpeggiation” Pro Guitar lessons
Dave Grohl Band (30 points) – Beat 5 songs from any band that has had Dave Grohl as a member
Decent Collection (15 points) – Beat 20 downloaded songs
Downloader (20 points) – Play a downloaded song
Drum Roll, Please! (10 points) – Nail a drum roll
Drum Trainer Graduate (30 points) – Complete the final Pro Drum Trainer lessons
Drum Trainer Initiate (15 points) – Complete the introductory Pro Drum Trainer lessons
Drums Apprentice (20 points) – 5 Star on Easy Drums (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Face Melter (25 points) – Melt faces by beating any three ’80s Metal songs
Fastest Feet (15 points) – Hit 90% of the Kick notes in a song on Hard Drums
Fistful of Awesome (15 points) – Beat 5 downloaded songs
Guitar Apprentice (20 points) – 5 Star on Easy Guitar (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Guitar Perfectionist (25 points) – Get 100% accuracy on Expert Guitar
Hell Defrosted (25 points) – Win all rewards on the “Hell Freezes Over” Road Challenge
Hometown Threwdown (20 points) – Complete the “Hometown Throwdown” Road Challenge
HOPO-cidal Maniac (25 points) – Kill 53,596 Hammer-ons and Pull-offs
I Want It All (15 points) – Play a downloaded Queen song
Is This Just Fantasy? (25 points) – Hit all triple awesomes in “BohemianRhapsody” on Medium or a higher difficulty
Just Another Band Out of Boston (15 points) – 5 Star any Boston song
Keys Apprentice (20 points) – 5 Star on Easy Keys (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Keys Streaker (15 points) – Get a streak of 350 notes on Keys
Live Free or Die (25 points) – Beat all of the free downloadable songs for Rock Band
Major Mileage (25 points) – Get 90 or more spades on “The Long Drive South” Road Challenge
Mercurial Vocalist (30 points) – Earn 5 stars on Vocals on a downloaded Queen song
Mile High Club (25 points) – Complete the “Really Frequent Flyers” Road Challenge
Millionaire Club (25 points) – Get 1,000,000 on one song
Most Authentic Strummer (10 points) – Hit 100% of the notes, only strumming up, on Hard Bass
Party Animal (20 points) – Completed the “Total Debauchery” Road Challenge
Play a Real Guitar Already! (15 points) – Play “The Hardest Button to Button” on Pro Guitar
Power Chords (15 points) – Complete the “Power Chords” lessons in the Pro Guitar trainer
Pro Bass Apprentice (20 points) – 5 Star on Easy Pro Bass (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Pro Guitar Apprentice (20 points) – 5 Star on Easy Pro Guitar (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Pro Guitar to the Max (15 points) – Max out your Score Multiplier meter on Pro Guitar
Pro Keyboardist (15 points) – Hit at least 90% of the notes in 3 songs on Expert Pro Keys
Pro Keys Apprentice (20 points) – 5 Star on Easy Pro Keys (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Pro Keys Graduate (25 points) – Complete the final Pro Keys trainers
Pro Keys to the Max (15 points) – Max out your Score Multiplier meter on Pro Keys
Real Nor’easter (20 points) – Complete “The Wicked Awesome Tour”
Rock Band Immortal (50 points) – 5 Star every song in Rock Band 3 on Expert
Rock Band Legend (30 points) – 5 Star every song in Rock Band 3 on Hard
Rock Band Master (25 points) – 5 Star on Medium (or 3 Star on a higher difficulty) any 50 Rock Band 3 songs
Self-Made Dude or Lady (5 points) – Create a Character
Shameless Self-Promotion (15 points) – Download and play three songs from a band that has Harmonix team members in it
Tambourine Master (10 points) – Hit 100% of the notes in a percussion section
The Connoisseur’s Connoisseur (25 points) – Get 90 or more spades on “The European Connoisseur” Road Challenge
The Endless Setlist III (50 points) – Sucessfully complete “The Endless Setlist III!”
The Perfect Drug (30 points) – Get a 200 note streak on “The Perfect Drug”
Triple Awesome (10 points) – Get a Triple Awesome while playing with Vocal Harmonies
Tune Up (4 points) – Calibrate your audio/video setup for the optimalRock Band 3 experience
Ultimate Road Warrior (30 points) – Win all awards on the “Really Frequent Flyers” Road Challenge
Vocal Apprentice (20 points) – 5 Star on Easy Vocals (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs
Vocal Virtuoso (15 points) – Earn an Awesome rating on at least 90% of the phrases in 6 songs on Hard Vocals
Vocals Showmanship (10 points) – Deploy overdrive four times in a single song as a vocalist
Well Connected (6 points) – Connect your Rock Band 3 Band with rockband.com at http://www.rockband.com
Wilderness Survival (20 points) – Complete the “Through the Wilderness, Eh?” Road Challenge
You Ain’t Seen Nothing Yet (20 points) – Maintain overdrive for 60 seconds