Battle Lou in Easy Mode
Description: battle with Lou using Easy Mode notes.
How to: When the battle with Lou starts (on Expert Mode), strum without holding any frets down. When you lose, select the Tutorial option at the Game Over menu. Do the Guitar Battle Tutorial and play through it in its entirety. After the "Lesson Complete" message appears on-screen and the next fret board appears, pause the game and exit. This will bring you back to the Lessons menu.
Now, press the red button, which will bring you back to the list of songs. The battle with Lou should be highlighted. Choose the song, and Lou's note chart will be set to Easy Mode now. Your note chart will still be in Expert Mode, but Lou's will be in easy mode.

Bret Michaels of Poison
Description: make the singer on stage appear as Bret Michaels of Poison fame
How to unlock: insert the following code at the in-game cheats menu:
Green & Red x3, Green & Blue x4, Red & Blue, Red x3, Red & Blue, Red x3, Red & Blue, Red x3

Tiki Guitar
How to unlock: complete Career Mode on hard with five stars.

El Jefe Guitar
How to unlock: complete Career Mode on expert with five stars.

PendulAxe Bass
How to unlock: complete Co-op Mode on expert.

Neversoft Skateboard
How to unlock: complete Co-Op Mode on expert with five stars.

Beach Life Bass
How to unlock: complete Co-op Mode on hard.

Bat Guitar
How to unlock: Get 5 stars on each song during Career Mode on Easy difficulty.

Distant Visitor Guitar
How to unlock: complete Career Mode on Expert difficulty.

Rojimbo Guitar
How to unlock: complete Career Mode on Hard difficulty.

Nemesis 13 Guitar
How to unlock: complete Co-Op Career Mode on any difficulty.

Jolly Roger Guitar
How to unlock: Get 5 stars on each song during Career Mode on Medium difficulty.

Moon Shot Guitar
How to unlock: complete Career Mode on Easy.

Saint George Guitar
How to unlock: complete Career Mode on Medium.

Guitarists
Tom Morello (of Rage Against the Machine)
Slash (of Guns N Roses/Velvet Revolver)
Lou (the Devil in the game)
MetalHead
How to unlock: beat them in the game and then purchasing them for $10,000 (Lou costs $15,000).

Songs (Normal)
Pass the song successfully to unlock songs in the normal fashion. It will be unlocked from then on.

All Songs (Quick Play Mode)
Description: unlock all of the game's songs for Quick Play Mode
How to unlock: Insert the following notes in the Options menu:
Yellow & Orange, Red & Blue, Red & Orange, Green & Blue, Red & Yellow, Yellow & Orange, Red & Yellow, Red & Blue, Green & Yellow x2, Yellow & Blue x2, Yellow & Orange x2, Yellow & Blue, Yellow, Red, Red & Yellow, Red, Yellow, Orange

Precision Mode
How to unlock: insert the following notes in the Options menu:
Green & Red x3, Red & Yellow x2, Red & Blue x2, Yellow & Blue, Yellow & Orange, Yellow & Orange, Green & Red x3, Red & Yellow x2, Red & Blue x2, Yellow & Blue, Yellow & Orange x2

Performance Mode
How to unlock: Insert the following notes in the Options menu:
Red & Yellow, Red & Blue, Red & Orange, Red & Blue, Red & Yellow, Green & Blue, Red & Yellow, Red & Blue

Through the Fire and Flames
Win the game to unlock the track "Through the Fire and Flames".

Air Guitar
How to unlock: Insert the following notes in the Options menu:
Blue & Yellow, Green & Yellow x2, Red & Blue x2, Red & Yellow x2, Blue & Yellow, Green & Yellow x2, Red & Blue x2, Red & Yellow x2, Green & Yellow x2, Red & Yellow x2

Boss Characters
Description: Unlock any boss characters as playable character
How to unlock: Beat them in the game and they will become unlocked.

Hyperspeed
How to unlock: Go to the in-game cheat menu and insert the following cheat codes on your guitar:
Orange, Blue, Orange, Yellow, Orange, Blue, Orange, Yellow

No Failure
Description: Make it impossible to fail a song
*** This cheat will not work in Career Mode
How to: Insert the following code in the in-game cheats menu:
Green & Red, Blue, Green & Red, Green & Yellow, Blue, Green & Yellow, Red & Yellow, Orange, Red & Yellow, Green & Yellow, Yellow, Green & Yellow, Green & Red

All Items Available
To make every item available at the in-game store, insert the following cheat codes at the in-game cheats menu. Keep in mind that because you're strumming using 4 buttons, no sounds will play. You'll have to check the store when you're done inserting the cheat-password to see if it worked:
Green/Red/Blue/Orange, Green/Red/Yellow/Blue, Green/Red/Yellow/Orange, Green/Blue/Yellow/Orange, Green/Red/Yellow/Blue, Red/Yellow/Blue/Orange, Green/Red/Yellow/Blue, Green/Yellow/Blue/Orange, Green/Red/Yellow/Blue, Green/Red/Yellow/Orange, Green/Red/Yellow/Orange, Green/Red/Yellow/Blue, Green/Red/Yellow/Orange.

How to do easy and medium
To do easy the easiest way to do it is to put your index finger on the green , the middle finger on the red, and the ring finger on the yellow. And to do medium easy put the index finger on the green, the middle finger on the red, ring finger on the yellow, and put the pinky on the blue. Keep your finger on these so it can be easier to do.

How to get bat guitar
Get a five star on all the songs in easy mode

PS3 Cheats for Guitar Hero III: Legends of Rock

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