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.
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