When you finish the TIE-Fighter Constrution Facilitie Level you'll get the ROGUE SHADOW as a sub menu in the story mode. Go to extra's then cheat codes and type in the following cheats.
Cheats - Effect
wookiee - Unlock The Apprentice's father's costume
holocron - Unlock The Apprentice's Hooded Costume
mandalore - Unlock Rahm Kota to play With
jedimaster - Unlock Mace Windu to Play With
sithlord - Unlock Darth Vader To play With
lightsaber - Get a Extra Powerfull Lightsaber
Defeating enemies
The best way to defeat enemies faster is to use Dark Rage. Then, use Maelstorm after you use Dark Rage to make it last longer.
Floating Stormtrooper
There is a Stormtrooper floating outside a window in Starkiller's (The Apprentice's) first level. You can see it outside a window on the right side of the hall.
Raxus Prime: Lightsaber part
On Raxus Prime the first time, once get to where you can see most of the swamp junkyard there will be a part sticking out with a lightsaber hilt. Use the crates to jump up there and get it.
Tip
It is always better to destroy totally EVERY destroyable or movable thing because they might hold useful holocrons. These holocrons, at the interval of 5s, when viewed in the rogue shadow at EXTRAS, will have odd words in the right hand corner. These are the cheat codes.
Unlimited force
When in Rouge Shadow. Go to Juno and select Cheats. Then enter this.
Code - Effect
Vergence - Unlimited force
Various Codes
Successfully complete the first mission. After gaining access to the Rogue Shadow, you have the ability enable cheat codes. When on board your ship between missions, select "Extras", then the "Enter Code" option. Enter one of the following codes to activate the corresponding cheat function. Note: Enabling a code for a different character may prevent some intermissions sequences from being viewed.
Costume Cheats...