Here is the full list of all 50 Rock Band 3 trophies - there are 33 bronze, 15 silver, 1 gold and 1 platinum.
Won all Rock Band 3 trophies.
Completed the final Pro Drum Trainer lessons.
Nailed all triple awesomes in "Bohemian Rhapsody".
Completed the introductory Pro Drum Trainer lessons.
Killed 53,596 Hammer-ons and Pull-offs.
Sucessfully completed "The Endless Setlist III"!
Got a Triple Awesome while playing with Vocal Harmonies.
5 Starred on Easy Vocals (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Earn an Awesome rating on at least 90% of the phrases in 6 songs on Hard Vocals.
5 Starred on Easy Keys (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
5 Starred on Easy Pro Keys (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
5 Starred on Easy Pro Bass (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
5 Starred on Easy Pro Guitar (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Got 1,000,000 on one song.
Hit at least 90% of the notes in 3 songs on Expert Pro Keys
Got a streak of 350 notes on Keys.
Completed the final Pro Keys trainers.
5 Star every song in Rock Band 3 on Hard.
5 Starred the Rock Band 3 disc on Expert.
Get 85% on all Guitar Solos in Rock Band 3 on Hard or Expert.
Won all awards on the "Really Frequent Flyers" Road Challenge.
5 Starred on Easy (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Got 90 or more spades on "The European Connoisseur" Road Challenge.
Completed the "Total Debauchery" Road Challenge.
Got 90 or more spades on "The Long Drive South" Road Challenge.
Completed the "Really Frequent Flyers" Road Challenge.
Hit 100% of the notes, only strumming up, on Hard Bass.
Maintained overdrive for 60 Seconds.
Complete the "Through the Wilderness, Eh?" Road Challenge.
Got 100% accuracy on Expert Guitar.
Won all rewards on the "Hell Freezes Over" Road Challenge.
Completed "The Wicked Awesome Tour".
5 Starred on Easy Drums (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
5 Starred on Medium (or 3 Starred on a higher difficulty) 50 Rock Band 3 songs.
5 Starred on Easy Guitar (or 3 Starred on a higher difficulty) 25 Rock Band 3 songs.
Beat a Rock Band 3 score of 12,345,678.
Get a streak of 500 notes on Bass.
Hit 100% of the notes in a percussion section.
Completed the "More Chord Holding and Arpeggiation" Pro Guitar lessons.
Completed the "Power Chords" lessons in the Pro Guitar trainer.
Deployed overdrive four times in a single song as a vocalist.
Renamed your band.
Created a Character.
Completed the "Hometown Throwdown" Road Challenge.
Max out your Score Multiplier meter on Pro Keys.
Nailed a drum roll.
Hit 90% of the Kick notes in a song on Hard Drums.
Maxed out your Score Multiplier meter on Pro Guitar.
Played "The Hardest Button to Button" on Pro Guitar.
Calibrated your system for optimal performance with Rock Band 3.