No you cannot. People will try to scam you for money/microsoft points. You have to unlock them through achievements. Go to Google and look up how to unlock them.
there is no permanent cheats in halo 3. you need to unlock them by achievments. and, you can not get the flaming armor effect, it is only for bungie employees. in halo reach, buy the legendary package to get that armor effect.
http://hubpages.com/hub/Halo-3-Armor
No, there is no armor in Halo 3 that has a knife in the shoulder.
There is no Brute armor in Halo 3, only Elite and Spartan models.
go to http://hubpages.com/hub/Halo-3-Armor
you get all the vidmaster achievements on halo 3 and halo 3 odst
Lucky for you, there is now a way to easily unlock recon armor. There are a few steps you must complete to unlock Recon armor in Halo 3. 1. Buy Halo 3: ODST 2. Create a bungie account. 3. Complete the vidmaster achievements on Halo 3 and Halo 3: ODST. There are 7 in all. 4. Under your account preferences, click Unlock Recon. You should now have recon armor. RUB IT IN THEIR FACES!!!
NO
To unlock Recon armor in Halo 3, you originally had to beat all of the VidMaster achievments, but the armor is now available to all players. To unlock the recon armor in Halo: Reach you had to pre-order the game and you would get a long (25 character) code for the recon armor DLC. To unlock the recon armor in Halo 4, you had to either pre-order the game or simply buy the armor with your in-game credits.
Buy halo reacj armor in the startup menu in the armory for credits in online games
recon armor
the same way in halo 3 because when you play halo 3 mythic it says your playing halo 3