so i have been playing the new halo game since it come out and i have some achievements that are not unlocking and its been like that since the first day it come out
the ones that are not unlocking are
Halo 2: Complete Cairo Station
Halo 2: Complete Outskirts
Halo 2: Complete Metropolis
Halo 2: Complete The Arbiter
Halo 2: Complete The Oracle
and i have even done the missions 3 or 4 time and still nothing
so can you help me with it if not thats ok 
I played through the campaign of halo 4 on legendary in co-op and
The achievents for
- Every Level of Halo 4 on normal (In german something like Wake up John)
- Every Level of Halo 4 on heroic (In german something like I need a hero)
- Every level of Halo 4 on legendary (In german something like The legend of 117)
are stuck. My second player received every achievement as soon as it was on 100%.
Every 3 of them have 100%, but they are not unlocked.
This means for me now, that besides multiplayer, which is a mess, I can not even play the campaign, because even this doesn’t work. And I don’t want to replay the campaign just because the people taking my money didn’t do their job.
As you can see: I’m pissed. Really pissed. But still i try to contribute with my problems to make 343 fix this.
For me, personally, this is the end of the halo series. An end, this game just didn’t deserve.
well all we can do for now is wait for it to be fixed as it will in time 
Yeah, my achievement for completing the first level of Halo 4 has been stuck saying “Done, Unlocking” for nearly 3 weeks now.