Guitar Hero II (PS2)

Secret Guitars

Snaketapus Guitar: Complete Hard Mode.

The Log" Guitar: You must achieve 5-Star every song on Expert.

Battle Axe Guitar: Complete Expert Mode.

Casket Guitar: Complete Medium Mode.

Eyeball Guitar: You must achieve 5-Star every song on Hard.

Fish Guitar: Complete Easy Mode.

USA Guitar: You must achieve 5-Star every song on Easy.

Viking Guitar: You must achieve 5-Star every song on Medium.


Cheats
Unverified. On the main menu, directly depress the colored key without any other input.

Performance Mode ... YELLOW, YELLOW, BLUE, YELLOW, YELLOW, ORANGE, YELLOW, YELLOW

Hyper Speed ... ORANGE, BLUE, ORANGE, YELLOW, ORANGE, BLUE, ORANGE, YELLOW

Air Guitar ... YELLOW, YELLOW, BLUE, ORANGE, YELLOW, BLUE

Eyeball Heads ... BLUE, ORANGE, YELLOW, ORANGE, YELLOW, ORANGE, BLUE

Moneky Heads ... ORANGE, BLUE, YELLOW, YELLOW, ORANGE, BLUE, YELLOW, YELLOW

Flaming head ... ORANGE, YELLOW, ORANGE, ORANGE, YELLOW, ORANGE, YELLOW, YELLOW

Horse head ... BLUE, ORANGE, ORANGE, BLUE, ORANGE, ORANGE, BLUE, ORANGE, ORANGE, BLUE

Hyper Speed ... ORANGE, BLUE, ORANGE, YELLOW, ORANGE, BLUE, ORANGE, YELLOW

PAL version Codes
PAL region has different codes from the NTSC version of Guitar Hero 2.

Air guitar ... BLUE, YELLOW, ORANGE, BLUE, YELLOW, YELLOW

Eyeball Heads ... YELLOW, ORANGE, BLUE, ORANGE, BLUE, ORANGE, YELLOW

Hyper Speed ... YELLOW, ORANGE, BLUE, ORANGE, YELLOW, ORANGE, BLUE, ORANGE

Monkey Heads ... YELLOW, YELLOW, BLUE, ORANGE, YELLOW, YELLOW, BLUE, ORANGE

Flaming Head ... YELLOW, YELLOW, ORANGE, YELLOW, ORANGE, ORANGE, YELLOW, ORANGE

No HUD performance mode ... YELLOW, YELLOW, ORANGE, YELLOW, YELLOW, BLUE, YELLOW, YELLOW

... B, O, O, B, O, O, B, O, O, B, O, O, B, O, O, B, O - Horse Head


Unlockable: Face-off Mode
Complete the game on medium or higher

Unlockable Co-Op Guitars
Here is how you can unlock additional Basses in Co-Op mode

Gibson SG Bass - Beat 10 Songs

Gibson Grabber - Beat 20 Songs

Gibson Thunderbird - Beat 30 Songs

Gibson Les Paul and skin - Beat 40 Songs

Hofner Bass - Beat every song

Lava Pearl Musicman Stingray - Get 5 stars on at least 10 songs

Cream SG - Get 5 stars on 20 songs

Natural Sunburst Gibson Thunderbird Bass - Get 5 stars on every co-op mode song (stacks with below)

Natural Maple Gibson Grabber Bass - Get 4 stars on all co-op mode songs

Hint - Ripper Guitar Glitch
Unverified. Before you follow the glitch you must choose to do one of the two glitch(es):

(A) Giving a normal guitarist 'The Scythe'. Go to whatever difficulty you would like to play on, choose the Grim Ripper as a guitarist. Go to select guitar and pick the scythe, (seeing as it was the old one, read (B) for more info). Now select the prefered guitarist, and now he is using 'The Scythe'. He only has the scythe because it didn't go to guitar select mode like in co-operative after selecting guitarist.

-- or --

(B) The Grim Ripper with a normal guitar. Go to whatever difficulty you would like to play on, choose any guitarist (except Grim Ripper), then choose your prefered guitar. Now select the Grim Ripper, it should still have your prefered guitar because it didn't go to the guitar select screen and auto-choose scythe like in co-operative mode.

These two glitches only works in career mode.