Here is the full list of all 50 Guitar Hero: Warriors of Rock achievements worth 1,000 gamerscore.
Earned 2000 Stars in QP+
Bettered another person's grade
Earned 1000 Stars in QP+
Hit 150,000 notes in Quest
5-starred 5 random songs
Earned 500 Stars in QP+
5-starred 5 chosen songs
Laid down 100 notes in GH(tm)Jam
Scored over a million in a Power Challenge
Collected at least 115 songs
Withstood the Punishment
Dominated all character chapters
Earned an elite score
Followed the Feed
Hit 75,000 notes in Quest
Earned Diamond on 2 challenges at once
Supported the GH(tm)Tracks community
Earned 100 Stars in QP+
Full-Comboed a tutorial exercise
Played any song 10 times
Bettered your own grade
Dominated 4 chapters
Dominated 2 chapters
Dominated a song in Quest
Defeated the scourge of Rock
Freed the Demigod of Rock
Awakened Warrior Axel (Quest)
Charmed Warrior Casey (Quest)
Released Warrior Lars (Quest)
Summoned Warrior Pandora (Quest)
Regained the Legendary Guitar
Unleashed Warrior Johnny (Quest)
Invoked Warrior Austin (Quest)
Stole the Spotlight
Recruited Warrior Judy (Quest)
Liberated Warrior Echo (Quest)
Earned Gold on 3 challenges at once
Earned a score which is evenly divisible by 6
Earn all Stars from any one song (excluding the Power Challenge) (QP+)
Earn an 11x Band multiplier with any 4-player Band configuration (QP+)
5-Star any song as a 4-player Non-Standard Band, with all players on Medium or higher (QP+)
5-Star any song as a 4-player Standard Band, with all players on Medium or higher (QP+)
Beat any song with a final score ending in 000 as a Band (QP+)
Complete a song with only a Guitarist and Bassist, both earning the same score (QP+)
Beat Bohemian Rhapsody as a band with all on Medium or higher, and at least 2 vocalists (QP+)
Beat 2112 Part 4 as a Standard band with 3 or more members, all on Medium or higher difficulty (QP+)
Beat Fury of the Storm as a solo Drummer on Hard or higher difficulty (QP+)
Beat Black Widow of La Porte as a solo Expert Guitarist (QP+, no Powers)
As a Standard Band, earn Gold or higher on 2 Band Challenges in a single play of a song (QP+)
Play Pro Faceoff, Momentum, Momentum+, Streakers, Do or Die, and Perfectionist at least once each