Enter H35TUX as a code to unlock Darth Maul for purchase.
Unlock Darth Vader
Get true jedi status on every level to unlock the secret level, and then complete the secret level to unlock Darth Vader.
Unlock Luminara
Enter A725X4 as a code to unlock Luminara for purchase.
Unlock Superkit and Mystery Diner Door
Unlock the superkit (the Tantive IV model outside Dexter's Diner) by filling the Jedi bar while playing. This incidentally unlocks access to the mystery door.
Filling the Jedi bar is not a simple function of money, but also in grabbing all the pre-staged LEGO studs in each mission. Dying in a stage will reduce the Jedi bar (although once the bar is at maximum and pulsing, it cannot diminish).
In vehicular missions (particularly the pod race), the player needs to smash and destroy all the destructable objects to gain money. The invulnerability cheat ($1,000,000 in the shop) can help you get a full Jedi bar in most of the non-
vehicular stages.
Unlockable Characters from the ? Door
When you reach True Jedi Status in all 17 levels, the ? door opensin Dexter's Diner. Finish the mission for the following unlockables.
Darth Vader - Complete the mission behind the ? Door
Stormtrooper - Complete the mission behind the ? Door
Buy Princess Leia from Dexter - Complete the mission behind the ? Door
Buy Rebel Soldier from Dexter - Complete the mission behind the ? Door
Unlocking the "?" door
To unlock the "?" door found at the episode selection room, you must achieve True Jedi Status in all of the seventeen levels, 6 in Episode 1, 5 in Episode 2, and 6 in Episode 3. True Jedi Status is the black/golden bar that appears at the top of your screen during any episode level. The way to fill up this bar is by getting a certain amount of studs during that level (each lvl has a different required stud amount.) Once all levels have True Jedi Status, the "?" door will be unlocked.
Various Codes
To activate these cheat codes, you need to start a new game, then enter "Decter's Dinner" and go to "Enter Code":
Unlock Darth Maul...