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