Destroy the Benemoth building. You should hear a foghorn sound to indicate that the hat has been unlocked.
Level 1-4: Curly hair
Destroy the "Fish Are Like Plants" building. You will hear an foghorn sound after the building is destroyed, and the curly hair will be unlocked.
Level 3-2: Desert trap
There is a flower in the sand. However, if you dig down to get it, a big green thing will eat you before you take it.
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.
Minigames, Levels and Hats
Set the player 1 name to "ROYGBIV".
Super Soviet Missile Master mini-game
Complete level 1-5 and the Super Soviet Missile Master mini-game will be unlocked after the intermission sequence.
Unlock Hats
Select "Options" from the main menu,then enter the "Player 1 Setup" option and select "Name." Enter any of the following names to unlock the specific hat.
BUBBA-Unlock all riders
ROADKILL-Unlock all tracks
GENERALLEE-Unlock allvehicles
DOUBLEBARREL-Unlock all challenges
REDROOSTER-Unlock all championships
GINGHAM-Unlock-Max.stats
FIDDLERSELBOW-Max.skill level