There are three but they do nothing for you at all, like remove HUD and other useless stuff.
There is no cheats.
there are no cheats for xbox but you could download a mod for halo 3 to get all armour
halo 3 does not have any cheats
There really isn't Halo 3 cheats except for manually done cheats from the controller itself. This cheat is a way of holding down your gun like master chief in one of the Halo 3 posters. If talking about like " type in this cheat and you unlock all the maps cheat" well no. There are no cheats like that for Halo 3. :)
no cheats in any halo game
There are no glitches, cheats or workarounds to earn all the achievements in Halo 3 illegitimately.
No cheats, you have to follow procedure.
there are none.
no
there are no cheats for halo,2,and 3, just glitches and tricks,and you can look up alot of them on youtube
None of the Halo's have any 'real' cheats, the only one is the lower your weapon one, which is just like Halo 3's.
No.There are online cheats, but you will get banned instantly.