Entry Location:
Go to the codes section of the main menu

EXPLOSIVEWORLD All cubes are explosive cubes
STEALTHARMOR Can move undected by any enemy
BOTOFWAR Kills or stuns everything within range
RAINBOWLASER Laser switches colors continuously
GLOWINTHEDARK Lights up dark areas
GOLDENTRACKS Tracks are solid gold
BOTOFMYSTERY Wall-E wears ski goggles

Entry Location:
While playing hold down R1 and L1 and hit the following buttons. To turn the cheats off just do it again.

Triangle, Triangle, Down, Down - Infinite Weapons
Up, Down, Left, Right, Right, Left, Down, Up - Invulnerability
X, X, Up, Up - Killer Weapons (Super Damage)
X, Triangle, X, Triangle - Mega Guns
Left, Left, Up, Down, Left, Right - Radial Blast
Triangle, X, Square, Circle - Trade Weapons for Health

Entry Location:
Boss Guitar Battle

If you want to beat Slash or Tom Morello, the easy way just fail about 4 or 5 times. A message will appear on the screen telling you that you have failed. Then just select "Wuss Out" and it will let you skip to the encore. It wont work if your trying to beat Lou, but it will against Slash or Tom Morello.

Entry Location:
Enter these codes on the guitar controller at the Cheats screen within the Options menu. Select Enter Cheat and a graphic of the guitar controller will appear on the screen. You must press the strum bar as you push each button or combination of buttons, as if you’re playing notes in the game. There is no time limit, so take your time – entering these chords is more about accuracy.. The game will tell you when you’ve entered each code correctly. If there are two or more colors listed, hold both/all listed buttons and strum them as a chord.

No Fail
Green + Red, Blue, Green + Red, Green + Yellow, Blue, Green + Yellow,
Red + Yellow, Orange, Red + Yellow, Green + Yellow, Yellow, Green +
Yellow, Green + Red

Air Guitar (Guitar is invisible)
Blue + Yellow, Green + Yellow, Green + Yellow, Red + Blue, Red + Blue,
Red + Yellow, Red + Yellow, Blue + Yellow, Green + Yellow, Green +
Yellow, Red + Blue, Red + Blue, Red + Yellow, Red + Yellow, Green +
Yellow, Green + Yellow, Red + Yellow, Red + Yellow

Hyperspeed
Orange, Blue, Orange, Yellow, Orange, Blue, Orange, Yellow

Performance Mode
Red + Yellow, Red + Blue, Red + Orange, Red + Blue, Red + Yellow, Green
+ Blue, Red + Yellow, Red + Blue

Easy Expert (gives you more time to hit notes)
Green + Red, Green + Yellow, Yellow + Blue, Red + Blue, Blue + Orange,
Yellow + Orange, Red + Yellow, Red + Blue**

Precision Mode (gives you less time to hit notes)
Green + Red, Green + Red, Green + Red, Red + Yellow, Red + Yellow, Red +
Blue, Red + Blue, Yellow + Blue, Yellow + Orange, Yellow + Orange, Green
+ Red, Green + Red, Green + Red, Red + Yellow, Red + Yellow, Red + Blue,
Red + Blue, Yellow + Blue, Yellow + Orange, Yellow + Orange

Large Gems
Green, Red, Green, Yellow, Green, Blue, Green, Orage, Green, Blue,
Green, Yellow, Green, Red, Green, Green + Red, Red + Yellow, Green +
Red, Yellow + Blue, Green + Red, Blue + Orange, Green + Red, Yellow +
Blue, Green + Red, Red + Yellow, Green + Red, Green + Yellow

Unlock All Songs
Yellow + Orange, Red + Blue, Red + Orange, Green + Blue, Red + Yellow,
Yellow + Orange, Red + Yellow, Red + Blue, Green + Yellow, Green +
Yellow, Yellow + Blue, Yellow + Blue, Yellow + Orange, Yellow + Orange,
Yellow + Blue, Yellow, Red, Red + Yellow, Red, Yellow, Orange

Unlock Everything
Green + Red + Blue + Orange, Green + Red + Yellow + Blue, Green + Red +
Yellow + Orange, Green + Yellow + Blue + 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