Here is the full list of all 50 Guitar Hero: Smash Hits achievements worth 1,000 gamerscore.
You won a song with the rock meter in red.
You performed as the Bassist.
You recovered from a poor performance.
You performed as the Vocalist.
You completed a song with any instrument on any difficulty in local Quickplay or Career.
Complete a song in every venue.
Win an online Pro Face-Off match by 25,000 points or more.
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 the Career Tutorial.
Complete a song with all Band members on Expert (4 player Band).
Perform as the Guitarist.
Play 20 online matches.
Complete the Career as the Bassist.
Trigger Star Power simultaneously (4 player Band).
Download a song from GHTunes(SM).
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 player Band.
Complete the Career as the Drummer.
Complete the Career as the Guitarist.
Complete the Career as the Vocalist.
Complete all four instrument Careers on any difficulty.
Complete a song on Expert + (Drums only).
Create a new custom instrument.
Create a new custom Band logo.
Create a new custom rocker.
Perform as the Drummer.
Win a Band vs. Band match (8 players).
Create a custom tattoo.
Play a song in the Atlantis venue.
Win an online Pro Face-Off match.
Win 50 online matches.
Get a 100 note streak in the song Through The Fire and Flames on Hard or higher as the Drummer.
Play 150 songs throughout your entire Career.
Score 5 stars in a song on Expert with Lars Umlaut in single player.
Complete single player Expert Career on all instruments.
Score 95% or more on the song Killer Queen as the Vocalist (Expert).
Complete the song YYZ with 5 stars on Expert Bass.
Complete Through The Fire And Flames with 4 stars or more as the Guitarist on Expert.
Complete the song Raining Blood with 5 stars as the Drummer on Expert+.
Hit all Open Strum notes in the song Laid To Rest as the Bassist.
Complete 100% on any song on Expert in single player.
Perfectly play the Let's Play! section in the song Play With Me as a lead Guitarist on Expert.
Complete the song Smoke On The Water as the Vocalist.
Fail a song with available Star Power in single player.
Perfectly play the First Blood section of Raining Blood as the Guitarist on Expert.
Get 5 stars on the song Beast And The Harlot Expert Drum without using Star Power.
Score 2,000,000 points on Free Bird as a Band.