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