Achievements Not Unlocking (All of them including Campaign)

[Jawmuncher]

So I started to play halo wars tonight after awhile and got up to mission 8 when I realized no achievements are unlocking. Absolutely none.
I can't figure out exactly whats going on here either.

I've tried Deleting my save, clearing the cache, starting a new game continuing a game. But nothing is working.
Hell when I delete the save and start up the game my save somehow reappears.

Does anyone have any idea what I could do?
All I can think of at the moment is two things.

-Something to do with XBL? Started the game awhile back online, playing now without internet.
-Im playing on a different xbox then when I first started playing
-Lastly all i recall is when starting the game there was some sort of error message or something but can't recall what it said.

[Steel2040]

hit me up on xbl gt is steel2040 and we can talk