No , its just a hack or a mod that people can do.
You have to download a mod, there is no halo armor in the game itself.
If you have it on xbox 360 you can't get it, thou if you have it on PC continue to read, if you want to get it search it up on google on gamespot i think they have it just type in like "Oblivion PC Mods, Halo Armor" and you should get it
It is either leather/steel or quest\enchanted armor or blades armor
Mods.... search halo armour oblivion
No, only with the help of a mod (modification).
I really do not know
YEZ! real halo armor at ebay.com
by using cheats i guess but you can only use cheats on the computer version unless you are counting the duplication gliches as cheats but that has nothing to do with getting halo armour so i think it is only cheats on the PC OK
No, in Halo 2 you can not unlock armor.
No, there is no armor in Halo 3 that has a knife in the shoulder.
http://hubpages.com/hub/Halo-3-Armor
If you are a true oblivion fan, then you should know how to get it already. However, if you are new to the game then here's how. close the final oblivion gate(the big one) eventually you will get to the part where merunes dagon is attacking, and martin will light the dragon fires(of course dagon and his men will put up a fight) After you save the day, a dude(i forgot his name) will talk to you and tell you about the armor. He will tell you to come back in a week and your armor will be ready. this armor is really cool looking, and it defends really well too. Hope you enjoy the game and have fun, ianswergoodones