Infinite Health
Go to the Extras menu and then the Cheats screen. Enter the code BUBBLE to have infinite health.

Lightsaber From Beginning
Go to the Extras menu and then the Cheats screen. Then enter the code FUDGE. This way, you won't have to wait to get a lightsaber until later in the game.

Infinite Ammo
Go to the Extras menu and then the Cheats screen. Enter the code BISCUIT to have unlimited ammo.

All Multiplayer Characters
Go to the Extras menu and then the Cheats screen. Enter the code PEEPS to have all multiplayer characters.

Unlock Seven Levels
Go to the Extras menu and then the Cheats screen. Enter CHERRY to unlock the first seven levels of the game.

All FMVs
Go to the Extras menu and then the Cheats screen. Enter the code FLICKY to unlock all FMVs.

Stage Select
Enter DINGO on the cheat menu.

Unlimited Force
Enter SCOOTER on the cheat menu.

Play Demo Level
Enter DEMO on the cheat menu!

The following trick allows you to walk on walls using a little bit of Force power for short amount of time. Go up to a wall. If the wall is to your right, press Left Analog-stick Up/Right and press A. You should walk on the wall. If the wall is to your left, Left Analog-stick Up/Left and press A.
If you have Saber Defense to the top in Force powers, it is easier to kill enemies with lightsabers. Defend their blows and sometimes they will get hit and get killed.

When you get to the harder levels, you will find out that Dessan (Dark Jedi) had followed you to the Valley of the Jedi and was giving his fighters the power of the Force and created fake Jedi. You will have to fight these people throughout the game. If you do not want to waste your time fighting them, then use Force Speed. You will move incredibly faster than your opponent and can attack them while his lightsaber is going too slow.

After you get Force Grip, use it and Saber Throw to kill the "fake" Jedis. This take longer as you progress in the game, but it still works.

To kill opponents faster, change your lightsaber mode to red (strong).
Trap him in a corner then keep slashing him. This tactic may not always work, but it will make him weaker.

Use Force Speed to move faster, then attack him with as many blows as possible.

Enter BUBBLE as a code at the cheat screen. You cannot get hurt, unless you jump off the edge of a cliff into oblivion. Lasers, bombs, enemy Force moves, and lightsabers cannot hurt you. This works in both multi-player and single player levels.

Enter FLICKY as a code at the cheat screen.