Complete the game, including the three extra missions, to unlock the bonus option at the main menu. The bonus menu allows the following scenes to be viewed: Charlie Bucket, The Wonka Factory, Wonkabot Troubles, Violet Beauregarde, Veruca Salt, Mike Teavee, The Special Prize, Up and Out, Film Trailer 1, Film Trailer 2 and Film Images.
Candipult
To use the Candipult, press Y when near one of them. Rotate them with the Analog-stick and press Y again to set it. Aim all the candy balls into the giant bowl to complete the level.
Getting Augustus out of the pipe
Get two Oompa-Loompas, then find the stairs; you will find some machines. Order the Oompa-Loompas to work, then Augustus should blow up into the tube.