how can i get tech support for some issues with halo 4 ive been expercing ? had a few problems !! 1st problem i encounted was when completing on solo ledgendary iy game me all my achivments apart fron my master cheif armor when i checked it said i hadny completed mission 3, which ive now done, then with the 25 challenge achivement which didnt unlock for me till i done 26 challenge and now my biggest problem to date is completeing my pioneer ranking and my xp perk which was suppose to unlock doesnt even show i can select it !! id much appriciate some advice coz im starting to feel a little cheated keep having to do more than im suppose to to unlock stuff, thanks
