Game Achievements:

• American Idol - Win the full American Idol tournament at any difficulty level (50 Gamerpoints)
• American Sensation - Win 20 American Idol single player tournaments (30 Gamerpoints)
• Dedication - Score 50 million points (cumulative in any mode) (100 Gamerpoints)
• Girl's Best Friend - Get a perfect score throughout a full American Idol tournament (100 Gamerpoints)
• Global Star - Play an Xbox LIVE Arcade League match (10 Gamerpoints)
• Golden Ticket - Pass the auditions phase in single player (10 Gamerpoints)
• Grudge Match - Play an Xbox LIVE Head-to-Head match (10 Gamerpoints)
• Headbanger - Compete offline in a battle Head to Head game (10 Gamerpoints)
• Hero - Achieve Diamond Status for ten different songs (50 Gamerpoints)
• Inspiration - Achieve Gold Status for every song on the disc (10 Gamerpoints)
• It Didn't Take That Long - Score 10 million points (cumulative in any mode) (50 Gamerpoints)
• It Sounds Like a Lot - Score 1 million points (cumulative in any mode) (20 Gamerpoints)
• Just the Two of Us - Play an offline Co-op Duet (10 Gamerpoints)
• Legend - Achieve Diamond Status for twenty different songs (75 Gamerpoints)
• Maestro - Achieve Diamond Status for every song on the disc (175 Gamerpoints)
• Megastar - Achieve Diamond Status for one song (10 Gamerpoints)
• Million Seller - Achieve Platinum Status for every song on the disc (50 Gamerpoints)
• Premiership - Compete offline in an Arcade League game (10 Gamerpoints)
• Ranked Global Star Winner - Win an Xbox LIVE Arcade League ranked match (15 Gamerpoints)
• Ranked Grudge Match Winner - Win an Xbox LIVE Head-to-Head ranked match (15 Gamerpoints)
• Ranked World Tour Winner - Win an Xbox LIVE American Idol Tournament ranked match (15 Gamerpoints)
• Superstar - Achieve Diamond Status for five different songs (25 Gamerpoints)
• The First of Many - Achieve Platinum Status for one performance (5 Gamerpoints)
• The Great American Songbook - Sing all the songs on the disc once - full song only (20 Gamerpoints)
• The Showman - Complete a medley and receive Platinum Status (20 Gamerpoints)
• Why Don't You Marry Him Then - Achieve "Excellent" comments from Simon three times in a row during an American Idol tournament (15 Gamerpoints)
• World Idol - Win the full American Idol tournament at Expert difficulty level (80 Gamerpoints)
• World Tour - Play an Xbox LIVE American Idol Tournament match (10 Gamerpoints)