Successfully complete one of the following tasks to get a trophy:

Rocksmith Platinum Elite (Platinum): Awarded for earning all Rocksmith trophies.
Duck Hunter (Bronze): Play the Guitarcade game: Ducks.
Fret Fast (Bronze): Beat 10,000,000 points in the Guitarcade game: Ducks.
Ducks x 6 (Bronze): Play the Guitarcade game: Super Ducks.
Just Super! (Bronze): Beat 150,000,000 points in the Guitarcade game: Super Ducks.
Solo Foundations (Bronze): Play the Guitarcade game: Scale Runner.
Scales Owned (Bronze): Beat 50,000,000 points in the Guitarcade game: Scale Runner.
Challenge Harmonics (Bronze): Play the Guitarcade game: Harmonically Challenged.
Beat Harmonics (Bronze): Beat 1,000,000 points in the Guitarcade game: Harmonically Challenged.
Batter Up (Bronze): Play the Guitarcade game: Big Swing Baseball.
Giant! (Bronze): Beat 2,000,000 points in the Guitarcade game: Big Swing Baseball.
Slide Puzzle (Bronze): Play the Guitarcade game: Super Slider.
Slide to Victory (Bronze): Beat 15,000,000 points in the Guitarcade game: Super Slider.
Where Rainbows Come From (Bronze): Play the Guitarcade game: Quick Pick Dash.
Furious Plucker (Bronze): Beat 5,000,000 points in the Guitarcade game: Quick Pick Dash.
The One With Zombies (Bronze): Play the Guitarcade game: Dawn of the Chordead.
Guitardead (Bronze): Beat 1,000,000 points in the Guitarcade game: Dawn of the Chordead.
Happy Shopper (Bronze): Visit the shop.
Singles Rock (Bronze): Beat 100,000 points in a Single Note Arrangement.
Chordinated (Bronze): Beat 100,000 points in a Chord Arrangement.
All Rounder (Bronze): Beat 100,000 points in a Combo Arrangement.
The Basics (Bronze): Complete Soundcheck (Reach Rank 1).
New Act (Bronze): Reach Rank 2.
Local Support Act (Bronze): Reach Rank 3.
Local Headliner (Bronze): Reach Rank 4.
National Support Act (Bronze): Reach Rank 5.
National Headliner (Bronze): Reach Rank 6.
International Support Act (Bronze): Reach Rank 7.
International Headliner (Silver): Reach Rank 8.
Elite Guitarist (Silver): Reach Rank 9.
Super Elite Guitarist (Silver): Reach Rank 10.
Rocksmith (Gold): Reach Rank 11.
My 1st Gig (Bronze): Play an Event.
My 1st Encore (Bronze): Qualify for an Encore.
Better Than An Encore? (Silver): Qualify for a Double Encore.
The Rocksmith Method (Bronze): Earn all Bronze Technique Medals.
Tutorials My Axe (Silver): Earn all Gold Technique Medals.
Tone is My Avatar (Bronze): Create and save a custom tone.
Hear Me Now (Bronze): Use the Amp.
D-licious (Bronze): Use the Tuner to tune to Drop-D.
Cente-beater (Bronze): Beat a 100-note streak.
Just Awesome (Silver): Beat a 750-note streak.
Strummer (Bronze): Beat a 5-chord streak.
No Dischord (Silver): Beat a 25-chord streak.
Half-K (Bronze): Beat a 500-note streak.
Art + Functionality (Silver): Collect all guitars.
Tone Peddler (Silver): Collect 50 effects pedals.
OK, I Learned (Bronze): Beat 200,000 points in Master Mode.
Stage Ready (Gold): Complete a Master Event.
Beneficial Friends (Bronze): Play multiplayer with 2 guitars.
Just Singing? (Bronze): Using a mic, sing along and achieve Nice Singing.