Hobbies And Interests
Stages
The key to unlocking new playable stages is completing challenges. At four challenges, the Separatist Droid Factory is unlocked, while completing 32 challenges will unlock Mustafar. To unlock all of the campaign mission stages, you must beat the game. However, there is a faster method: enter "mission" and press "A," then the "plus" symbol, then "2" twice, "plus" again, "C," "plus," "2" twice, "plus," "Z," "plus," then "2."
Characters
Characters such as Count Dooku, the EG-5 Jedi Hunter Droid, and General Grievous can be unlocked by completing all campaign missions. However, some characters can only be unlocked through challenges. Kit Fisto is available after nine completed challenges, Mace Windu at 18 and Plo Koon at 27. Some characters can be used only in challenge mode, such as Ahsoka Tano and Obi-Wan Kenobi. To unlock them, simply beat the campaign mode.
Costumes
Unlocking new character costumes is a matter of completing all of the different modes with the same character. Once you've unlocked all the characters, everyone has different battle gear access. For example, completing challenge mode with Anakin will reward you with his Jedi Knight robes, while using him to play through battle mode will unlock his Tatooine Battle Gear. Some costumes can also be unlocked by continuing to complete challenges. However, these are not character specific. For 32 challenges, you will unlock Ahsoka Tano's Ilum Battle Gear, as well as ARC Battle Gear for both Obi-Wan and Anakin.
Extras
In addition to unlocking many other secret items, completing the main campaign mode also unlocks all in-game movies for viewing, as well as an animated credit sequence. But opportunities to enjoy more "Clone Wars" art do not end there -- by completing challenges, you can unlock concept art galleries. Nine challenges will unlock the "Early Work" concept art, while the most difficult to access -- the "Evolution of the EG-5 Jedi Hunter Droid" -- is unlocked at 40 challenges.