sadly there is no cheat but if you get a lot of studs you may be able to buy them SORRY
In order to unlock Plo Koon, you must complete 27 challenges (which are in Challenge Mode)
no she is not on Lego Star Wars the complete saga
You unlock it in the further game difficulties.
Katarn
Play the challenge missions.
there is no cheat to unlock everything but you van go to www.secretcodeslive.com
death star i think
yes
there is no invisibiltiy in the game
sarlaccfood
you can't! On the complete saga you can!
complete 27 challenges to unlock Plo Koon
You need to complete all story levels
You must complete the campaign on Jedi Knight difficulty.
You get to unlock episode 4 on Lego star wars is that you unlock all the people
1: its impossible 2: type in all the character codes
unlock them I think