FLuXX_PwR

I recently completed Halo 4's campaign on Legendary solely for obtaining the MK VI armor for multiplayer. However, a massive problem has arisen, the game did not register that I completed "Infinity" and "Midnight." Though, oddly enough, "Midnight" is registered as completed on Waypoint. Nonetheless, I went into my spartan customization, lo and behold, there was no MK VI armor (I don't care about my stats. That's not the point). I know it is a colossal ****-off to have spent all that time playing and not recieved the intended award. Has anyone else run into this problem?