Very, very carefully.
I'm assuming this is the Halo character and not the naval officer, where they don't have a helmet for the rank of master chief.
Its much safer and easier to buy one somewhere, all considered.
The Spartan helmet was bronze.
a spartan had a helmet a shield and a spear
he is spartan under his helmet has another helmet
Corinthian helmet?
gold silver bronze
Helmet, cuirass, spear, sword, sandals.
Just keep leveling up your spartan, but to get the mark VI helmet you have to be a colonel. So go try it out.
They are two of Jun's helmet. One is for your avatar and the other is for your Spartan on Halo: Reach. The one for your avatar is simply got for "Killed 100 enemies in a row without dying in either Campaign or Firefight. The one for your spartan I'm not sure about.
You have to become a UNSC Spartan Rank online.
You have to get the spartan graduate achievement by playing on Xbox Live
You need the Spartan Officer achievement - get 50 xp in any playlist.
Athena's helmet was not specifically Spartan, it was the helmet used by a Greek infantryman, a "hoplite" which was the backbone of all Greek polis (i.e.city states). The Hoplites of Sparta of course were the most famous because of their military superiority in ancient Greece.Mostly in time between 650-470BC. Athena wears a helmet as in addition to being Goddess of Wisdom, she was also Goddess of a Just War.