halo 3 does not have any cheats
Try www.cheatplanet.com and try there. There aren't any cheats in Halo 3 (not that i know of), but there are some really good glitches that you may like.
There is no cheats.
no
there are none.
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. :)
just go to http://www.gamefaqs.com/xbox360/926632-halo-3/cheats it also tells you the unlocks!
there are no cheats for xbox but you could download a mod for halo 3 to get all armour
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.
yes! there are many different types of cheats!
No, cheats are cheats and you cannot have them or you will get banned.