Cheat mode:
Pause game play, then press X, Y, X(2), Y(2), X, Y, X(2), Y(2)
to unlock "God Mode" and "Complete Mission" options at the
pause menu.
Dark Campaign:
Press X, Y(2), X(2), Y, X, Y at the episode selection screen
after starting a new game. Alternately, successfully complete
the Light Campaign.
9320 Battle Droid:
Get all the gold in the Light Campaign to unlock the
9320 Battle Droid as a playable character.
Earth Golem:
Successfully complete the Light Campaign to unlock the
Earth Golem as a playable character.
Fetica:
Get all the gold in the Dark Campaign to unlock
Fetica as a playable character.
Stone Gnome:
Successfully complete the Dark Campaign to unlock the
Stone Gnome as a playable character.
Sites: