American Idol
Win the full American Idol tournament at any difficulty level
50 ✓ March 29th, 2009
Million Seller
Achieve Platinum Status for every song on the disc
50 ✓ March 30th, 2009
The Showman
Complete a medley and receive Platinum Status
20 ✓ March 30th, 2009
The Great American Songbook
Sing all the songs on the disc once - full song only
20 ✓ March 30th, 2009
It Sounds Like a Lot
Score 1 million points (cumulative in any mode)
20 ✓ March 29th, 2009
Ranked Grudge Match Winner
Win an Xbox LIVE Head-to-Head ranked match
15 ✓ March 30th, 2009
Ranked World Tour Winner
Win an Xbox LIVE American Idol Tournament ranked match
15 ✓ March 30th, 2009
Ranked Global Star Winner
Win an Xbox LIVE Arcade League ranked match
15 ✓ March 30th, 2009
Headbanger
Compete offline in a battle Head to Head game
10 ✓ March 29th, 2009
Premiership
Compete offline in an Arcade League game
10 ✓ March 29th, 2009
Just the Two of Us
Play an offline Co-op Duet
10 ✓ March 29th, 2009
Grudge Match
Play an Xbox LIVE Head-to-Head match
10 ✓ March 30th, 2009
World Tour
Play an Xbox LIVE American Idol Tournament match
10 ✓ March 30th, 2009
Global Star
Play an Xbox LIVE Arcade League match
10 ✓ March 30th, 2009
Megastar
Achieve Diamond Status for one song
10 ✓ March 31st, 2009
Inspiration
Achieve Gold Status for every song on the disc
10 ✓ March 30th, 2009
Golden Ticket
Pass the auditions phase in single player
10 ✓ March 29th, 2009
The First of Many
Achieve Platinum Status for one performance
5 ✓ March 29th, 2009
Maestro
Achieve Diamond Status for every song on the disc
175 
Dedication
Score 50 million points (cumulative in any mode)
100 
Girl’s Best Friend
Get a perfect score throughout a full American Idol tournament
100 
World Idol
Win the full American Idol tournament at Expert difficulty level
80 
Legend
Achieve Diamond Status for twenty different songs
75 
Hero
Achieve Diamond Status for ten different songs
50 
It Didn't Take That Long
Score 10 million points (cumulative in any mode)
50 
American Sensation
Win 20 American Idol single player tournaments
30 
Superstar
Achieve Diamond Status for five different songs
25 
Why Don't You Marry Him Then
Achieve "Excellent" comments from Simon three times in a row during an American Idol tournament
15