For infinite Health in Star Wars Battle Front II just pause the screen and push the following. " up, up, up,left,down,down,down,left,up,up,up.left,right".
A small noise will bleep and then just unpause your game. If you start to get hurt then just pause then game put the code back in and try...try..again untill it works. :]

Unlimited health: up,up,up,left,down,down,down,left,up,up,up,left,right UnlimitedAmmo:up,down,left,down,down,left,down,down,left,down,down,down,left, right.

Also, on the first lvl on Rise of the Empier when you get the droid battle plans from their ship ,if you use the unlimited life cheat, and get in a gun the enemy ships will sometimes freeze in place and you can shoot them down as long as you like.

Ps: Jedi can still die when you use the unlimited life cheat.

To get invincibility,
*pause the game
**press up,up,up,left,down,down,down,left,up,up,up,left,right on the contral pad.

When you play as the emperor or count dukoo you will have both choke and lightning force powers. Use choke on someone and while you hold the trigger switch your powers to lightning. Now you will choke and lightning someone at the same time.
If you do multi player and have one person be the emperor or dukoo, and the other player on the opposing team, make both people invincible (code: Upx3, Left, Downx3, Left, Upx3, Left, Right), now you can do this without stopping. This is also an easy way to take out enemy jedi’s.

Note You Must Pause For Them to Work
Slow Mo Sounds
U, U, U, L, U, D, U, U, L, D, D, D, L, U, D, D, L, R
Infinite Ammo
U, D, L, D, D, L, D, D, L, D, D, D, L, R
Invincible
U, U, U, L, D, D, D, L, U, U, U, L, R
Always Special Character
U,D,D,U,D,D,L,R

The real cheat for unlimted ammo is
U D L D D L D D L D D D L R

You may call this a cheat o not it's up to you really.
Right, what I found out is that on mos eisley assault (assault because jedi can jump better), near the southern most 'heroes' spawn point (base) there is a overhang (two sticks with the purple sheet hangin off side of building) with a small staircase next to it. What you do is jump with you're character and land in the hole between purple overhang and stairs. In doing this your character will act as if they are falling. If you move your character close to the building (still falling) after about 3-15 seconds they will fall into the building. When you are in the building you can shoot/throw your lightsaber at enemies and kill them but you yourself cannot be seen, you will not be attacked at all. If your character does not fall into the building then just try again. Im not sure if this glitch is only on my battlefront 2 game so I will check my mates soon and I will post again to say if it works.

Yours sincerely, gameprorocker =)

God mode (infinite health):
Pause game in game-play and push, u, u, u, l, d, d, d, l, u, u, u, l, r.

Unlimited amunition (bullets, bombs, ect.)
Pause game during gameplay and press, u, d, l, d, d, l, d, d, l, d, d, d, l, r.

Codes:
L=left, R=right, U=up, and D=down. (on D-PAD only)

These cheats work in 1-Player and 2-Player mode!

Have fun ruling the galaxy and may the force be with you...

1. This will only work if you are Count Dooku or The Emporer. Force Choke an enemy. Keep choking him for 1 second, then switch to Force Lightining WHILE STILL HOLDING THE FORCE CHOKE BUTTON! Your enemy will be choked and have lightning on him at the same time. Your energy will keep replenishing at not run out.

2. This will only work in space battles. Get in any ship EXCEPT a bomber. It won't work with any bomber. Fly out of the hanger. Press X when an enemy fighter is in your reticule. A small targeting device will show. It looks like a circle split into three parts. At first it is white, but after a few seconds it will be red. When it is red, make sure the enemy is still in your reticule, then shoot as many secondary weapons as possible. The bombs or missiles will than chase the enemy and blow him up! This only works if you are in the pilot position, not co-pilot, passenger, or main-gunner.

Pause the game and enter:

Invincibility: up, up, up, left, down, down, down, left, up, up, up, left, right
Restore Ammunition: up, down, left, down, down, left, down, down, left, down, down, down

The cheats codes can be used on splitscreen in gameplay simply enter the codes and enjoy!

Here are some codes:
Invincibile: U,U,U,L,D,D,D,L,U,U,U,L,R
Infinite Ammo: U,D,L,D,D,L,D,D,L,D,D,D,L,R

God Mode:
Pause game in Single Player and press up,up,up,left,down,down,down,left up, up,up,left,right. If done right you will hear a sound. Do NOT attempt in Xboxlive it will not work and you will most likely be killed in the pause menu.

Unlimited Ammo:
Pause game in Single Player and press up,down,left,down,down,left,down,down,left,down,down,down,left,right. If done right you will hear a sound. Do NOT attempt in Xboxlive it will not work and you will most likely be killed in the pause menu.

Inviciblity
Pause the game in single player mode then press
Up (3), left, down (3), left, up (3), left, right.

Unlimited Ammuntion
Pause the game in single player mode then press
Up, down, left, down (2), left, down (2), left, down (3), left, right.

You will then here a noise for each of these to disable the effect type cheat again
Happy playing
And may the
Force be with you :P