Army Men: World War - Final Front Codes -

All weapons:
Press Start to pause game play, then hold R1 + L2 and press X ,Circle, Up(2), Square, Down.

Hint: Whazz Up! sequence:
In the Desert missions, subset 3, is a picture of a pharaoh besides the chalkboard to the right. You can crawl through the bottom of the picture. There is a hallway that you can continuously run down until you are forced to stop. A will soldier will run up and yell "Whazz Up!". Shortly after, a large tiger statue appears and also yells the same thing. After that, you will be returned to the game.

Hint: Grenade bowling sequence:
The entrance to the tomb is at the end of the second desert mission. Instead of walking to the tomb, turn towards the right of it to reach a pathway. Walk down the pathway completely to reach the grenade bowling area. There is a large visible sign also directing you to the alley.