From the main menu, select "Settings" and then "Codes" to enter the following cheats and unlock their effects.

Unlock All Arenas: TANTIVEIV
Unlock All Bonus Stages: NARSHADDAA
Unlock All Concept Art: AAYLASECURA
Unlock All Duel Characters: ZABRAK
Unlock All Movies: COMLINK
Unlock all Powers and Moves: JAINA
Unlock All Story Levels: KORRIBAN
Unlock Infinite Force Power: KAIBURR
Unlock Infinite Health: XUCPHRA
Unlock Quick Health and Force Refill: BELSAVIS
Unlock Super Light Saber Mode: SUPERSABERS
Unlock Tiny Droid Mode: 071779