- Spartan TKIA
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- Exalted Mythic Member
There is a lot of information here about the titles (as well as quite a lot of speculation). In essence, remain active for quite a long time (creating threads, posting, signing in, etc.) while avoiding getting warned or banned too many times. Linking your account to your Gamertag also helps, although you have already done that.
[Edited on 10.31.2011 5:22 PM PDT]