Final 5 Shadow Battle Arenas
Complete Hyrulean Adventure

Tingle tower minigames
Complete the second stage of each level in multi-player mode to unlock the corresponding mini games.

Hard mode and secret stage
Hold L+R as you put on the gamecube.pick hyrulean adventure[still holding L+R]release L+R and hold X+Y and pick a stage. At the title screen press:B, B, L, B,C-stick left, c-stick right, d-pad left,right,down,up and then press A.the screen will turn black. you'll be transported to the last level ,but there will be a new stage. pick it and you'll battle four ganons. they could change to the formaions you can.your weapon will be the bow which will change to the light arrows in this stage.you'll have seven hearts and one force fairy.