Star Wars - Knights Of The Old Republic 2: The Sith Lords cheats and cheat codes for XBox

First person camera:
Push Y, Left, A, Y buttons

Characters:

Disciple join you:
Choose a Female character at the start, and meet with Disciple on Dantooine

Handmaiden join you:
Choose a male character at the start, and he will join when you leave 
the Telos Jedi academy.

Hanharr join you:
Align yourself with the Dark Side before the fight between Hanharr and Mira.

HK-47 join you:
Collect the four different HK parts that are scattered across the worlds and 
fix the broken HK droid near the bridge.

Mira join you:
Align yourself either with the Light side or Neutral, before the fight 
between Hanharr and Mira

Cheat Node at the back rooms of the Jekk'Jekk Tar tunnels:
Get out of the pit after beating Mira or Hanharr. Enter to the door which 
leads out of the pit. Beat Ubese, then take the left most door. Go to the 
another door directly ahead. Beat two Ubese. Immediately after you beat the 
third Ubese, got to the wall directly opposite of the door and keep moving 
towards it. If preformed correctly, your targeting reticule should change to 
blue and choose the wall for a moment.
Immediately push A buttons. You are now in conversation mode with a Ubese 
who is behind the wall in the room with the exit. Here you can access to the 
Cheat Node. You will find different features in this sceret menu,
like "Skip to final sequence", "Delete Mira". 

Modify pitch and speed of the voice dialogue:
During the game play hold Black or White buttons on your controller-4 
to change the voice.

New dialogue choices
Complete the game twice. Align yourself with the Dark Side once and 
with the Light side also. When you begin the game 3rd time new dialogue 
choices appear while playing the game.

Change menu
Compelte the game once and you will see your character at the main menu.