does anyone have any free specialization unlock codes for the rest of the armors or do anyone have and advice on how to get the codes?
I am gonna say that wait for them.
The Specializations are gonna get released after January 21st. Two each week until all are unlocked.
My advice:
Wait one week, you will have more.
http://blogs.halowaypoint.com/Headlines/post/2013/01/09/The-Halo-Bulletin-1913.aspx