well there is no "body" you may be thinking of Katana. To get it you have to get achievements
you need 49 achevments with halo 3
There isn't
You need all the Halo 3 Achievmentswhich is 1000/1000 Gamerscore for Halo Katana.
If you unlock 1000 gamerscore with those achievements then yes you can unlock the katana body Armour.
I assume you are asking if you can customize your Elite armor in Halo 3 multiplayer to include the katana? No you cannot.
yes you get the marathon helmet and body piece and you get the katana bodypiece
you need to get 1000+ achievement points from halo 3
No, i believe it is 750, 1000 is for the Katana body piece if i remember correctly.
In order to obtain the Katana chest permutation on Halo Crusades, you must find all four Legendary Cards and turn them in at Luke's House.
You have to get 1000 gamer score.
o its for deccoration only