Ratchet & Clank: Up Your Arsenal Cheats

Magic Duck
If you go to Florona(The 2nd planet on the list) with the Quack-o-Blitzer and you keep going until your about to go in the first building right before that a snake thing will pop out of the water turn it into a duck and if it doesn't turn into a demon duck(the red flaming kind that helps you) it should be WALKING on water