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