After successfully completing the game including the three extra missions you will then unlock the Bonus option at the main menu. The bonus menu will allow scenes to be played.
To use the Candipults, press Triangle when near them. Rotate them with the Analog-stick and press Triangle again to set it. Aim the candipult at the giant bowl to complete this level successfully.
Gather two Oompa-Loompas once you get you need to find the stairs. You will find some machines up there. Order the Oompa-Loompas to go to work. Augustus should then shoot up into the tube.
to get all the mini games you have to get all of the letters spelling WONKA and to get the photo albums get all 25 boxes in each of the levels