10 20000 Leagues Under The TVComplete 5 Offline League games.
10 Completely Ruined!On Hard or Expert difficulty earn 1 Diamond record in the Gothic Ruins.
10 Debut AlbumUnlock and sing every song at least once.
10 Dive Right InOn Hard or Expert difficulty earn 1 Diamond record in the Dive Bar.
10 Frankie Says...Complete a duet of any 80's song with a male and female character dressed for the 80's.
10 Going GlobalTake on the World and play a Ranked or Player Xbox Live American Idol tournament.
10 Heading In The Right DirectionComplete 5 Offline Head To Head games.
10 IdolizedWin 15 American Idol Single-Player tournaments.
10 International GrudgeTake on the World and play a Ranked or Player Xbox Live Head To Head match.
10 Major Recording ArtistOn Hard or Expert difficulty earn 1 Diamond record in the Recording Studio.
10 On The Guest ListOn Hard or Expert difficulty earn 1 Diamond record in the Nightclub.
10 Party CentralCompete Offline in an American Idol Multiplayer Contest.
10 Ready For StardomOut-sing the competition to win your first full, single player American Idol tournament.
10 Spreading The News!On Hard or Expert difficulty earn 1 Diamond record in New York.
10 Taking On The WorldTake on the World and play a Ranked or Player Xbox Live Arcade League.
10 Video Killed The Karaoke StarOn Hard or Expert difficulty earn 1 Diamond record in the Music Video.
10 When's The Game on?On Hard or Expert difficulty earn 1 Diamond record in the Stadium.
15 Busting Heads The World OverDemonstrate your prowess by winning your first Ranked or Player Xbox Live Head To Head match.
15 Change Your Passion For GloryComplete the song 'Eye of the Tiger' while wearing the full Stars and Stripes Boxer outfit.
15 Harmony In 'Dis HarmonyIn Duet mode achieve Diamond Status on a True Duet.
15 Ladies' Man, No Time To TalkComplete the song 'Stayin' Alive' while dressed like a 70's Disco King.
15 Leagues Ahead Of The WorldDemonstrate your prowess by winning your first Ranked or Player Xbox Live Arcade League.
15 The World's Greatest AmericanDemonstrate your prowess by winning your first Ranked or Player Xbox Live American Idol tournament.
15 Young Man!In Duet mode complete Y.M.C.A. While wearing the appropriate headwear.
20 A Dirty DozenScore 12 million points (cumulative in any mode).
20 An American VirtuosoProve your dominance by winning 5 Ranked Xbox Live American Idol tournaments.
20 Blue Jeans And Pink SpandexComplete a 5 Song Medley composed exclusively of 80's and Disco songs to Platinum rating.
20 Enter The CroonerComplete a 5 Song Medley composed only of Ballad, Classics and Country songs to Platinum rating.
20 GeologyComplete a 5 Song Medley composed only of Rock and Hard Rock songs to Platinum rating.
20 HairsprayComplete a 5 Song Medley composed only of Pop and R&B songs to Platinum rating.
20 Hard DiamondOn Hard difficulty score a Diamond Record.
20 Head-Busting VirtuosoProve your dominance by winning 15 Ranked Xbox Live Head To Head matches.
20 Leagues Ahead VirtuosoProve your dominance by winning 5 Ranked Xbox Live Arcade League matches.
20 Paula's SoulmateIn a single American Idol competition earn Platinum scores for 10 or more of Paula's favorite songs.
20 Randy's Dog PoundIn a single American Idol competition earn Platinum scores for 10 or more of Randy's favorite songs.
20 Simon's Star SigningIn a single American Idol competition earn Platinum scores for 10 or more of Simon's favorite songs.
20 Together ForeverIn Duet mode achieve Diamond Status on ALL True Duets on the game disc.
25 1st Number One!Perfect a song to get your first Diamond record.
25 Enough To Buy An IslandAchieve 50 Diamond performances.
25 Need A Bigger HouseAchieve 200 Platinum or higher performances.
30 Best Friends ForeverDuring the American Idol Finals achieve 'Excellent' comments from Simon five times in a row.
30 Expert DiamondScore a Diamond Record on Expert.
30 Kelly Did It FirstIn Expert difficulty win an American Idol tournament without ever being in the bottom group.
35 Enough To Buy A Small CountryAchieve 100 Diamond performances.
35 Long Road To StardomScore 25 million points (cumulative in any mode).
5 Wearing Me OutCompletely customize a single character and use that character to sing a song.
50 Combo King!Pull off a Perfect Combo of 50 phrases in length.
50 Legend To BeIn Expert difficulty win the full, Single-Player American Idol tournament.
50 Professional SingerGet a Platinum ranking on a song with both lyrics and staff off.
75 Greatest HitsPerfect every song on the disc and get a clean sweep of Diamond Records.