Alien Hominid cheats and cheat codes for Gamecube

Cheat mode
Unlock all levels, mini-games, and hats:
Go to the options screen, then type "ROYGBIV" as your player name.
If the code is accepted, you should hear the sound of a horn.

Secret Hats
Go to the Options screen, and type the following names bellow
to unlock hidden hats for the 2 player game:

cletus
april
superfly
goodman
grrl
abe
princess
dandy
tomfulp
behemoth

Level 1-4: Chicken hat
Destroy the Benemoth house. You will hear the sound of horn sound when 
chicken hat unlocked.

Level 3-4: Bonus lives
Defeat the Giant green robot boss. When he start to exploding,
shoot his eye repeatedly an you will get lots of point.
When you reach 60000 points stop it, and finsh the level.
At the end of the stage, you will get 17 lives.

Level 1-4: Curly hair:
Destroy the "Fish Are Like Plants" house. You will hear the sound of 
horn sound when Curly hair unlocked.

Unlock Super Soviet Missile Master mini-game
Finish level 1-5

Get an extra life
Dig next to a flower