I was just wondering about the codes and wether I am entitled to one or not. I live in the EU and pre ordered the limited edition Halo 4 so am I eligable to get a code or not?
you got the specialization codes with the limited edition, just input it and you’ll get the extra specs/armor.
if you preordered only the standard edition, you’re out of luck
If you own LE, you must have all of the Specs, though there will be issues (I had a plenty of them). It took me more than 2 weeks to get all Specs permanently, because they randomly dis- and reappeared. Keep on trying, it will work. (And don’t forget to redeem that code you got with it;-)
I entered all the codes I got with the LE but nothing was unlocked until I reached level 50 I got to choose 1 then but that was it.
You have to earn each specialization. You pick one, and then 10 levels later pick another. The fact that you can see all 8 specializations means that you have them available to you. Others can only see 2
If you bought the LE, then I think you should. I don’t know about how it’s working in Europe, but here they sent out an email with a code that unlocks all the other classes. Check your email that you have associated with your Xbox Live Account and see if you have an email from 343. It could be a few months old, so scroll back.
Thanks for the help guy much appreciated 
> I entered all the codes I got with the LE but nothing was unlocked until I reached level 50 I got to choose 1 then but that was it.
Are you able to see the other locked specializations?
If so, don’t worry about it, you pick a new one every 10 levels. They don’t all unlock at once.
If you don’t see them all, I hope you kept all the contents of your LE. Look through them and you should be able to find the specializations redemption code.