nowhere because there are no cheat codes for halo 3
there is no codes in halo 3 ... -.-
No
yes
sadly there are no cheats
Halo 3 has no cheat codes, but some people have modded maps.
There are no cheat codes for Halo, only mods.
Cheat codes.
You can't because there isn't an invincibility cheat for halo 3. a matter of the fact, there isn't any cheat codes for halo 3 that i know of. maybe a few
http://www.gamerevolution.com/ http://www.cheatcc.com/ http://www.ign.com/
sadly,no bungie(creator of halo) did not want to put cheat codes in any of the halos because let me give you an exapmle. unlimited ammo in matchmaking. unfair isn't it. we all wish they made cheat codes.
just go to http://www.gamefaqs.com/xbox360/926632-halo-3/cheats it also tells you the unlocks!