Full list of all 62 Rock Band 3 achievements worth 1,250 gamerscore. It takes around 80-100 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 12 achievements worth 250 Gamerscore.
Got 100% accuracy on Expert Guitar.
Beat a Rock Band 3 score of 12,345,678.
Complete the "Through the Wilderness, Eh?" Road Challenge.
5 Starred on Medium (or 3 Starred on a higher difficulty) 50 Rock Band 3 songs.
Got 90 or more spades on "The European Connoisseur" Road Challenge.
Hit 100% of the notes, only strumming up, on Hard Bass.
Connected your Rock Band 3 Band with rockband.com.
Completed "The Wicked Awesome Tour".
Completed the "Hometown Throwdown" Road Challenge.
Get a streak of 500 notes on Bass.
5 Starred on Easy Guitar (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Created a Character.
Renamed your band.
Calibrated your audio/video setup for the optimal Rock Band 3 experience.
Maintain overdrive for 60 seconds.
Get 1,000,000 on one song.
5 Star every song in Rock Band 3 on Hard.
5 Star every song in Rock Band 3 on Expert.
Win all rewards on the "Hell Freezes Over" Road Challenge.
Get 90 or more spades on "The Long Drive South" Road Challenge.
Completed the "Total Debauchery" Road Challenge.
Complete the "Really Frequent Flyers" Road Challenge.
Win all awards on the "Really Frequent Flyers" Road Challenge.
Kill 53,596 Hammer-ons and Pull-offs.
Get 85% on all Guitar Solos in Rock Band 3 on Hard or Expert.
5 Starred on Easy Bass (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Nail a drum roll.
Hit 90% of the Kick notes in a song on Hard Drums.
5 Star on Easy Drums (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
Get a streak of 350 notes on Keys.
5 Star on Easy Keys (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
5 Star on Easy Pro Bass (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
Complete the introductory Pro Drum Trainer lessons.
Complete the final Pro Drum Trainer lessons.
Play "The Hardest Button to Button" on Pro Guitar.
Max out your Score Multiplier meter on Pro Guitar.
Complete the "Power Chords" lessons in the Pro Guitar trainer.
Complete the "More Chord Holding and Arpeggiation" Pro Guitar lessons.
5 Star on Easy Pro Guitar (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
Hit at least 90% of the notes in 3 songs on Expert Pro Keys.
Complete the final Pro Keys trainers.
Max out your Score Multiplier meter on Pro Keys.
5 Star on Easy Pro Keys (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
Get a Triple Awesome while playing with Vocal Harmonies.
Hit all triple awesomes in "Bohemian Rhapsody" on Medium or a higher difficulty.
Deploy overdrive four times in a single song as a vocalist.
Hit 100% of the notes in a percussion section.
Earn an Awesome rating on at least 90% of the phrases in 6 songs on Hard Vocals.
5 Star on Easy Vocals (or 3 Star on a higher difficulty) any 25 Rock Band 3 songs.
Sucessfully complete "The Endless Setlist III!"
Beat 5 downloaded songs.
Played a downloaded song.
Earn 5 stars on Vocals on a downloaded Queen song.
Beat all of the free downloadable songs for Rock Band.
Beat 12 downloaded songs.
Beat 20 downloaded songs.
Play a downloaded Queen song.
Download and play three songs from a band that has Harmonix team members in it.
5 Star any Boston song.
Melt faces by beating any three '80s Metal songs.
Beat 5 songs from any band that has had Dave Grohl as a member.
Get a 200 note streak on "The Perfect Drug".