Halo 3 Cheats for Xbox 360

Mission:The Floodgate
Result: "You’ll miss those eyes in the back of your head." Your motion sensor hides.

As you are walking down from the anti-air gun you demolished in last mission, you face a ramp (right next to the missile launcher). Target and smack the checkpoint around that ramp. Now, you should be able to listen marine yelling, “There! Over There!”.Now lLook up and to the right, straight at the roof of building next to the missle launcher. There is a single flood form (not to be mistaken with 2 other flood forms jumping right infront of you) which is holding skull. You have to finish him before he can jump, now get the skull which he will throw to the ground. If you do it quickly it will stuck on the roof, so you have to make sure you do it on right time..
Halo 3 Odst Cheats
The Famine Skull

Mission: Ark

Result: "Trust us. Bring a magazine." The weapons which are on floor or dropped are supposed to have very less ammunition e.g bullets compared to the normal.

Just after when the phantom is damaged and you enter into the valley , see on your left side, you should be able to see a big boulder. Go to the side of boulder by using ghost which is nearest to the bridge overhead. Use thurst to pilot ghost up to side of the wall. To achieve the skull, pilot 2 ghosts up the wall to the top of bridge & then stack them one on top of another right next to beam where the skull is located. Jump on to the beam from top of ghosts, make sure your direction is towards skull.
Tilt Skull

Mission: The Cortana

Result: "What used to be resistant is now immunity" Rivals have some body parts that may not get hurt certain bullet variants

While you are in circular shaped room with all the flood, locate and hop on top of a small structure piece next to the 2 archways, and up on rocks to the top left then turn left & jump up one more time and then do a 180 and jump over to the rocks across the side. When done successfully follow the the rock pointing out and leading up on top of of the real round shape room, skull should now be in blood.


Halo 3 Unlockable: Special Ending

To get the special ending unlocked you have to finish the game on the Legendary Mode successfully. Note: On legendary mode, its only the last stage