achievements not appearing? No show skulls

So, me and a friend have been playing CEA Co-Op the day it had came out and we made it to the level Keys. All the achievements up to that point we have gathered. 3 days later I went to his house, sent my profile over to his xbox so I can play with my account on split-screen. We continued on from there. We got a few a achievements as well. But, as we tried to get the bandana skull, it didnt show for me. When we beat the game, he recieved the campagin achievements for beating the game on legendary/heroic/normal. All I got was completion of the Maw. He went back to the menu, then I went in to see my maps. All I had was POA and the Maw. It also said I didnt even get the terminals when we did…

Was this because of that recent patch? He told me for some people it resets a few folks