Alien Hominid Cheat Codes for Gamecube

Extra life
When there is a flower in the ground dig next to it and you will get a life.

Level 3-4: Extra lives
After fighting the Boss (giant green robot with the eye and a fork and knife) and his life reaches zero, he will start exploding. Continue shooting at his eye. He will just continue exploding as long as you shoot, and you will continue gaining points. You can stop when you have about 60,000 points. At the end of the level, you will gain about seventeen lives.


Unlockables
Area 51 Hat - Get to level 3-1
Soviet Hat - Get to level 2-1
Pirate Hat - On level 1-1 destroy Hairy Nanny Daycare right after the miniboss.
Blond Hair - Beat the final boss on Hard mode.
Curly Hair Wig - Blow up the Fish are like plants building in level 1-5