Guitar Hero Encore: Rocks the 80s Cheats

Cheat Codes
At the main menu, enter a code to get the desired effect

G - Press the Green fret button.
R - Press the Red fret button.
Y - Press the Yellow fret button.
B - Press the Blue fret button.
O - Press the Orange fret button.

Y,B,Y,O,B,B - Air Guitar
Y,B,O,O,O,B,Y - Crowd Has Eyeball Heads
B,B,O,Y,B,B,O,Y - Crowd Has Monkey Heads
Y,O,Y,O,Y,O,B,O - Flame Head
B,O,O,B,Y,B,O,O,B,Y - Horse Head
Y,B,O,O,B,Y,Y,O - Hyperspeed Activate/De-Activate
B,B,O,Y,Y,B,O,B - Performance Mode
B,O,Y,R,O,Y,B,Y,R,Y,B,Y,R,Y,B,Y - Unlock Everything

Unlockable Basses
These bass guitars can only be used by the bass player in co-op mode, when playing a song with a bass track.

Cream SG: Get 5 stars on 20 songs in co-op mode.
Gibson Grabber: Beat 20 songs in co-op mode.
Gibson SG: Beat 10 songs in co-op mode.
Gibson Thunderbird: Beat 30 songs in co-op mode.
Hofner Bass: Beat every song on co-op mode.
Lava Pearl Musicman Stingray: Get 5 stars on every song in co-op mode.
Natural Maple Gibson Grabber: Get 4 or more stars on every song in co-op mode.
Natural Sunburst Gibson Thunderbird: Get 5 stars on every song in co-op mode.