Game Achievements:

• 1st Number One! - Perfect a song to get your first Diamond record! (25 Gamerpoints)
• 20000 Leagues Under the TV - Complete 5 offline League games. (10 Gamerpoints)
• A Dirty Dozen - Score 12 million points (cumulative in any mode). (20 Gamerpoints)
• An American Virtuoso - Prove your dominance by winning 5 Ranked Xbox LIVE American Idol tournaments. (20 Gamerpoints)
• Best Friends Forever - Achieve "Excellent" comments from Simon five times in a row during the American Idol Finals. (30 Gamerpoints)
• Blue Jeans and Pink Spandex - Complete a 5 Song Medley composed exclusively of 80's and Disco songs to Platinum rating. (20 Gamerpoints)
• Busting Heads the World Over - Demonstrate your prowess by winning your first Ranked or Player Xbox LIVE Head To Head match. (15 Gamerpoints)
• Change your Passion for Glory - Complete the song "Eye of the Tiger" while wearing the full Stars and Stripes Boxer outfit. (15 Gamerpoints)
• Combo King! - Pull off a Perfect Combo of 50 phrases in length. (50 Gamerpoints)
• Completely Ruined! - Earn 1 Diamond record in the Gothic Ruins at Hard or Expert difficulty. (10 Gamerpoints)
• Debut Album - Unlock and sing every song at least once! (10 Gamerpoints)
• Dive Right In - Earn 1 Diamond record in the Dive Bar at Hard or Expert difficulty. (10 Gamerpoints)
• Enough to Buy a Small Country - Achieve 100 Diamond performances. (35 Gamerpoints)
• Enough to Buy an Island - Achieve 50 Diamond performances. (25 Gamerpoints)
• Enter the Crooner - Complete a 5 Song Medley composed only of Ballad, Classics and Country songs to Platinum rating. (20 Gamerpoints)
• Expert Diamond - Score a Diamond Record on Expert. (30 Gamerpoints)
• Frankie Says... - Complete a duet of any 80's song with a male and female character dressed for the 80's! (10 Gamerpoints)
• Geology - Complete a 5 Song Medley composed only of Rock and Hard Rock songs to Platinum rating. (20 Gamerpoints)
• Going Global - Take on the World and play a Ranked or Player Xbox LIVE American Idol tournament. (10 Gamerpoints)
• Greatest Hits - Perfect every song on the disc and get a clean sweep of Diamond Records. (75 Gamerpoints)
• Hairspray - Complete a 5 Song Medley composed only of Pop and R&B songs to Platinum rating. (20 Gamerpoints)
• Hard Diamond - Score a Diamond Record on Hard. (20 Gamerpoints)
• Harmony in 'Dis Harmony - Achieve Diamond Status on a True Duet in Duet mode. (15 Gamerpoints)
• Head-Busting Virtuoso - Prove your dominance by winning 15 Ranked Xbox LIVE Head To Head matches. (20 Gamerpoints)
• Heading in the Right Direction - Complete 5 offline Head To Head games. (10 Gamerpoints)
• Idolized - Win 15 American Idol single player tournaments. (10 Gamerpoints)
• International Grudge - Take on the World and play a Ranked or Player Xbox LIVE Head To Head match. (10 Gamerpoints)
• Kelly Did It First - Win an American Idol tournament at Expert difficulty without ever being in the bottom group. (30 Gamerpoints)
• Ladies' Man, No Time to Talk - Complete the song "Stayin' Alive" while dressed like a 70's Disco King! (15 Gamerpoints)
• Leagues Ahead of the World - Demonstrate your prowess by winning your first Ranked or Player Xbox LIVE Arcade League. (15 Gamerpoints)
• Leagues Ahead Virtuoso - Prove your dominance by winning 5 Ranked Xbox LIVE Arcade League matches. (20 Gamerpoints)
• Legend to Be - Win the full, single player American Idol tournament at Expert difficulty. (50 Gamerpoints)
• Long Road to Stardom - Score 25 million points (cumulative in any mode). (35 Gamerpoints)
• Major Recording Artist - Earn 1 Diamond record in the Recording Studio at Hard or Expert difficulty. (10 Gamerpoints)
• Need a Bigger House - Achieve 200 Platinum or higher performances. (25 Gamerpoints)
• On the Guest List - Earn 1 Diamond record in the Nightclub at Hard or Expert difficulty. (10 Gamerpoints)
• Party Central - Compete offline in an American Idol Multi Player Contest. (10 Gamerpoints)
• Paula's Soulmate - Earn Platinum scores for 10 or more of Paula's favorite songs in a single American Idol competition. (20 Gamerpoints)
• Professional Singer - Get a Platinum ranking on a song with both lyrics and staff off. (50 Gamerpoints)
• Randy's Dog Pound - Earn Platinum scores for 10 or more of Randy's favorite songs in a single American Idol competition. (20 Gamerpoints)
• Ready for Stardom - Out-sing the competition to win your first full, single player American Idol tournament. (10 Gamerpoints)
• Simon's Star Signing - Earn Platinum scores for 10 or more of Simon's favorite songs in a single American Idol competition. (20 Gamerpoints)
• Spreading the News! - Earn 1 Diamond record in New York at Hard or Expert difficulty. (10 Gamerpoints)
• Taking on the World - Take on the World and play a Ranked or Player Xbox LIVE Arcade League. (10 Gamerpoints)
• The World's Greatest American - Demonstrate your prowess by winning your first Ranked or Player Xbox LIVE American Idol tournament. (15 Gamerpoints)
• Together Forever - Achieve Diamond Status on all True Duets on the game disc in Duet mode. (20 Gamerpoints)
• Video Killed the Karaoke Star - Earn 1 Diamond record in the Music Video at Hard or Expert difficulty. (10 Gamerpoints)
• Wearing Me Out - Completely customize a single character and use that character to sing a song. (5 Gamerpoints)
• When's the Game on? - Earn 1 Diamond record in the Stadium at Hard or Expert difficulty. (10 Gamerpoints)
• Young Man! - Complete Y.M.C.A. in duet mode while wearing the appropriate headwear. (15 Gamerpoints)