After Visas attacks you when you board your ship go talk with Kreia and tell her that when visas attacked that she did something to your sight, she will then tell you that she did nothing that wasn't already there and will tell you to close your eyes, do as she says and a cutscene will start, when it's over your conversation will end. You will then be notified of an influence gain. Repeat that exact same conversation to gain more, and more influence. You will know when your influence is maxed when your not notified of an influence gain then you will be able to ask Kreia anything.

In the tomb on Korriban there is a dead Jedi where if you take things from him 2 hissis will spawn. Kill them then receive your xp. Then "open" up the jedi again and 2 more hissis will appear. You can spawn a lot of hissis' at once and the easiest way to kill them (I've found out) is the use the force power death field on a large group of them.

This isn't really a cheat but it's quite cool. Notice when you are at the main menu there will be a person at the left of the options, it usually starts with Nihilus but as you go on further it changes to Sion and Traya. If you're smart then you will notice that all of these people are Sith Lords. To get your character on the front screen all you do is be a real bad boy (or girl) until you reach full Dark Side points, sometimes it only works if you are a prestige class, my character is a Sith Assasin with full Dark Side alignment and whenever I go on he is standing in the black smoke with his Dark jedi Master robes on (which I don't actually have in the game). This is quite cool. Anyhoo. . .

May The Force Be With You!

Okay, I found this out on accident when I was playing the game.
You have to have the final healing force power for this to work, trust me it does, because this helped me beat Kreia.

Anyway, when you click the healing power right before it activates click an attack that you do without force powers and it will heal you and hurt your opponent.

Requirements:
Good persuade skill
Low treat injury skill(3 and under is best)

1. Head to Nar Shadaa's refugee sector and look for the Serroco gang and defeat them.

2. Talk to Hussef (in the center of the refugee camp) and get a quest from him to convince the Exchange to lessen their pressure on the refugees.

3. Find Geriel, he's the sick refugee. Talk to him to get a journal entry ("Plague Carrier"). You can attempt to cure him but you must be unsuccessful or the whole method for the glitch would end here, hence the low treat injury skill requirement.

4. Talk to Saquesh, the squid-guy boss of the Exchange for that sector. You can talk to him about several things but the following topic is essential for the glitch.
(conversation paraphrase)
A-> "There is a diseased refugee..."
B-> "[Persuade] If you don't lessen your hold the disease..."
C-> "I do not have the means to cure him."
D-> 4th/bottommost option (closes out the conversation)

5. You'll get a journal entry saying you've defeated the Serroco gang and persuaded the Exchange... As well as 1000exp.

6. Repeat the conversation flow in step 4 (you can leave out "c" from the flow this time) as many times as you want to keep getting a journal entry (unimportant), and 1000 exp.

The glitch will stay active as long as you don't kill the sick refuge/cure him or kill Saquesh follow the steps and you should be ok. You might want to save every few levels just in case you mess up. I your character will max out at level 50. It works for characters on both sides Dark or Light.

Change Voices- Add a controller to the fourth port and press Black or White to raise and lower character voices.

Happy gaming =p

Plug another controller into the forth port and press the black button

Believe it or not I've found a cheat for this game well it's more of a glitch but when you go to the secret tomb on koriban when you can go left to kreira go to the right and there will be a body every time you click on it more and more hissis will come just kill them and walla

(i did this for about an hour and got from lv 24 to lv 44) after this you will beat the game really easy so have fun owning the game

You must have visas mars in your party for this to work. After you talk to atton go talk to Kreia about the destruction of her home world. You must have at least 14 intelligence.

Choose the option that has intelligence on it and use every single conversation choice every time you talk to her this will automatically increase your influence with her until it won't go up any more.