- Activate Cheats
At the main menu, select 'Options', 'Cheats', 'Enter New Cheat', then enter one of the following codes to unlock the corresponding cheat option. If you entered the code correctly, a message will appear.

All Hammer Ons/Pull Offs Push Red, Green, Blue, Green, Blue, Green, Red, Green.
HUD Free Mode Push Green, Red, Green, Red, Yellow, Blue, Green, Red. Alternately, successfully complete the 'Alphabeat - Fascination' Platinum Bonus Challenge in Career mode to unlock the 'HUD Free Mode' option.
Performance Mode Push Yellow(2), Blue, Green, Blue, Red(3).
Air Instruments Push Blue, Yellow, Blue, Red(2), Yellow, Green, Yellow. Alternately, successfully complete the 'Aly & AJ - Like Whoa' Platinum Bonus Challenge in Career mode to unlock the 'Air Instruments' option.
Focus Mode Push Yellow(2), Green(2), Red(2), Blue(2).
Auto Kick Push Yellow, Green, Yellow, Blue(2), Red, Blue, Red. Alternately, successfully complete the 'Duran Duran - Rio' Gold Bonus Challenge in Career mode to unlock the 'Auto Kick' option.
All Slider Gems Push Yellow, Green, Yellow(3), Red, Blue, Red. Alternately, successfully complete the 'Styx - Mr. Roboto' Platinum Bonus Challenge in Career mode to unlock the 'All Slider Gems' option.
Electrika Steel Push Blue(2), Red, Yellow, Red, Yellow, Blue(2).
Most Characters Push Blue, Yellow, Green, Yellow, Red, Green, Red, Yellow.
Invisible Characters Push Green, Red, Yellow, Green, Yellow, Blue, Yellow, Green. Alternately, successfully complete the 'Filter - Take A Picture' Platinum Bonus Challenge in Career mode to unlock the 'Invisible Characters' option.

- Bonus characters
Successfully complete the indicated task in Career mode to unlock the corresponding character:

Adrian Young	Successfully complete the No Doubt 'Don't Speak' gig.
Skeleton Character	Successfully complete the 'Poison - Every Rose Has Its Thorn' Platinum Bonus Challenge.
Shadow Character	Successfully complete the 'David Bowie - Let's Dance' Gold Bonus Challenge.
Tom Dumont	Successfully complete the No Doubt 'Just A Girl' gig.
Gwen Stefani	Successfully complete the No Doubt 'Just A Girl' gig.
Frankenrocker	Successfully complete the 'Fall Out Boy - Sugar, We're Goin' Down' Diamond Bonus Challenge.
Golden God	Successfully complete the 'Robbie Williams and Kylie Minogue - Kids' Diamond Bonus Challenge.
Taylor Swift	Successfully complete the Taylor Swift 'Love Story' gig.
Adam Levine	Successfully complete the Maroon 5 'She Will Be Loved' gig.
Tony Kanal	Successfully complete the No Doubt 'Don't Speak' gig.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Till Death Do Us Part	Play an online Do or Die game.
Secret Notes 16	'Ocean Avenue' by Yellowcard.
Secret Notes 3	'Honky Tonk Women' by The Rolling Stones.
Secret Notes 10	'Love is a Battlefield' by Pat Benatar.
My First Gig	Finish a Career gig on any difficulty.
Secret Notes 2	'Black Cat' by Janet Jackson.
Secret Notes 11	'Don't Speak' by No Doubt.
Secret Notes 1	'Beautiful Soul' by Jesse McCartney.
Secret Notes 14	'Y.M.C.A.' by Village People.
Secret Notes 13	'Wannabe' by Spice Girls.
Secret Notes 6	'She Will Be Loved' by Maroon 5.
Welcome to Band Hero	Finish the Tutorials.
Secret Notes 12	'I Heard It Through the Grapevine' by Marvin Gaye.
Secret Notes 17	'Dirty Little Secret' by The All-American Rejects.
Secret Notes 7	'Let's Dance' by David Bowie.
Secret Notes 15	'So Yesterday' by Hilary Duff.
Secret Notes 18	'Oh, Pretty Woman' by Roy Orbison.
Secret Notes 4	'Take What You Take' by Lily Allen.
In the Moment	Successfully complete a Band Moment.
Secret Notes 9	'Lips of an Angel' by Hinder.
Secret Notes 5	'Like Whoa' by Aly & AJ.
Secret Notes 19	'Kung Fu Fighting' by Carl Douglas.
15 Minutes of Fame	Finish a song as an Avatar rocker.
M.C.	Host an online Career game and play a song.
Secret Notes 8	'Bring Me to Life' by Evanescence.
10 Points
Star Powered	Gain an 11x multiplier.
A Cool Mill	Realize over 1,000,000 points as a band in any single song in Career or Quickplay.
Platinum Blonde	Gain Platinum level on a Career Challenge.
Four of a Kind	Finish a song as 4 of the same instrument on any difficulty in Quickplay or Career.
Star Light, Star Bright	Realize over 10,000 points while in a single Star Power deployment.
Iced Out	Gain Diamond level on a Career Challenge.
Glimmer	Gain 111 Stars in Career.
Rise to Fame	Finish 25% of the gigs in Career.
Studio Time	Create a GH Studio song.
15 Points
Picture Perfect	Streak through an entire song without missing a note on medium or harder difficulty.
Face to Face	Finish 25 online Pro Face-Off matches, win or lose.
Fevered Pitch	100% a song as a vocalist.
Jack of All Trades	Finish at least one challenge for every instrument at Gold level or better.
There's no 'I' in 'Band Hero'	Finish a song with 4 players without any members failing on expert in Career or Quickplay.
20 Points
Road Most Traveled	Unlock every venue.
Testing the Waters	Play through every Band Hero song once.
Nation's Star	Finish 50% of the gigs in Career.
Sparkle	Gain 333 Stars in Career.
Nice to Meet You	Finish the gigs and unlock all of the celebrity characters.
30 Points
World Known	Finish 75% of the gigs in Career.
The Long Road Ahead	Finish Career on any difficulty with any instrument.
A New Challenge Awaits	Finish 50 of the Career Challenges at Platinum or Diamond.
Shine	Gain 555 Stars in Career.
490 Points
Treasure Hunt	Acquire all of the Secret Notes.

- Easy 'Secret Notes' and 'Treasure Hunt' achievements
Create a setlist containing all 'Secret Notes' songs. Then, play Vocals only, set the difficulty to Beginner, and put the microphone in front of a fan. You should get 100% on all songs and get the 'Treasure Hunt' and all 'Secret Notes' achievements.