Here is the full list of all 50 Guitar Hero: Warriors of Rock achievements worth 1,000 gamerscore.
Stood up to Father Brown
Earned 2000 Stars in QP+
Earned 1000 Stars in QP+
Faced the Truth
Tried out some Competitive games
Earned an elite score
Earned a band score ending in 000
Guitarist and Bassist tied
Followed the Feed
Played any song 10 times
Dominated all character chapters
Hit 150,000 notes in Quest
Earned all there is
Earned 500 Stars in QP+
Dominated 4 chapters
Endured the Storm
Maxed out the multiplier
5-starred as a Medium Non-Standard Band
Earned Gold on 2 Band Challenges at once
5-starred as a Medium Standard Band
Scored over a million in a Power Challenge
Laid down 100 notes in GH(tm)Jam
5-starred 5 chosen songs
5-starred 5 random songs
Supported the GH(tm)Tracks community
Earned 100 Stars in QP+
Dominated 2 chapters
Bettered your own grade
Bettered another person's grade
Survived the Black Widow
Earned Diamond on 2 challenges at once
Earned Gold on 3 challenges at once
Hit 75,000 notes in Quest
Withstood the Punishment
Earned a score which is evenly divisible by 6
Defeated the scourge of Rock
Dominated a song in Quest
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
Invoked Warrior Austin (Quest)
Recruited Warrior Judy (Quest)
Stole the Spotlight
Collected at least 115 songs
Full-Comboed a tutorial exercise
Liberated Warrior Echo (Quest)
Unleashed Warrior Johnny (Quest)