Here is the full list of all 51 Guitar Hero: Smash Hits trophies - there are 38 bronze, 10 silver, 2 gold and 1 platinum.
Download a song from GHTunes(SM).
Complete the Career Tutorial.
Complete single player Expert Career on all instruments.
Complete all four instrument careers on any difficulty.
Complete the Career as the Bassist.
Complete the song YYZ with 5 stars on Expert Bass.
Play 150 songs throughout your entire Career.
Complete the Career as the Drummer.
Win a song with the rock meter in red.
Create a new custom Band logo.
Create a new custom instrument.
Create a custom tattoo.
Create a new custom rocker.
Complete the Career as the Vocalist.
Complete the Career as the Guitarist.
Complete a song in every venue.
Play a song in the Atlantis venue.
Complete the song Through The Fire and Flames with 4 stars or more as the Guitarist on Expert.
Score 5 stars in a song on Expert with Lars Umlaut in single player.
Complete the song Smoke On The Water as a Vocalist.
Perform as the Vocalist.
Hit all Open Strum notes in the song Laid To Rest as the Bassist.
Perform as the Bassist.
Get 5 stars on the song Beast And The Harlot Expert Drums without using Star Power.
Get a 100 note streak in the song Through The Fire and Flames on Hard or Higher as the Drummer.
Recover from a poor performance.
Fail a song with available Star Power in single player.
Win an online Pro Face-Off match by 25,000 points or more.
Win an online Pro Face-Off match.
Perform as the Guitarist.
Complete a song on Expert + (Drums only).
Complete 100% on any song on Expert in single player.
Perform as the Drummer.
Complete a song with any instrument on any difficulty in local Quickplay or Career.
Earn all of the Bronze, Silver and Gold Trophies.
Win an online Face-Off match by 25,000 points or more.
Win an online Face-Off match.
Complete a song in a Band (4 players).
Complete a song with all Band members on Expert (4 player Band).
Play 20 online matches.
Trigger Star Power simultaneously (4 player Band).
Complete the Career in a Band (2-4 players).
Get 100% on a song as a Band (4 players).
Score the highest individual score in a 4 players Band.
Win a Band vs. Band match (8 players).
Win 50 online matches.
Score 95% or more on the song Killer Queen as the Vocalist (Expert).
Complete the song Raining Blood with 5 stars as the Drummer on Expert+.
Perfectly play the Lets Play section in the song Play With Me as a lead Guitarist on Expert.
Perfectly play the First Blood section of the song Raining Blood as the Guitarist on Expert.
Score 2,000,000 points on the song Free Bird as a Band.