Star Wars Knights of the Old Republic II: The Sith Lords Cheats

Go to citidel over tarsis. Take sides with the Ithorian and when
Czerka fights them go to the Ithorian in the rare flower place and
he will ask you to help them. Tell him he is on his own and you
will receive dark side points. You can keep talking to him and
tell him this until you get the desired amount of darkside points.
Once your done getting enough points, tell him your going to help
him and he will give you the keycard.

To defeat the droid inside the shuttle bay, place mines in front of the huge bay doors. At least ten are recommended. Keep placing them in a diagonal path heading counter-clockwise to the shuttle. If it survives your mines after it comes out of its room, it will be heavily damaged and can be easily defeated.

Go to Korriban. Make sure you have Force Storm and Death field. In the shyrach caves, (You can go there no matter what your alignment) go through both illusion rooms and take a right at the part were a Hssiss is waiting and go down the path.
When you search the body of the Jedi, two hssiss will appear, if you repeatedly press the A button fast, you can spawn somewhere around 30-40 hssiss. Use Force Storm and they will all die in a few hits. If you have it, use force Potency as your fighting style for max damage. I became lvl. 48 in 1 hour.
WARNING: SAVE AFTER EVERY WAVE OF HSSISS! SOME OF THE OLDER SYSTEMS WILL FREEZE FROM TOO MUCH DATA PASSING THROUGH AT ONCE! ALWAYS SAVE YOUR GAME!

When your T3 droid is sold to the Hutts, you will reach the last door in the Warehouse Area. It is a combination lock. Use the following combination to unlock it. 1. Center: Counterclockwise. 2. Left: Counterclockwise. 3. Right: Clockwise). After you get what you need out of this room, you will be confronted by HK droids again. They are not that difficult -- stay and fight. You will find the HK chassis for your HK droid.