Problem with the Achievement!

Hallo, everyone, I bet the game campaign on legendary already, but I did it while offline, now the achievement doesn’t even appear at my online profile, is this a problem, or I will have to beat it again while online?, I thought it would be alrigh.

Hope you guys know what is the problem…

Thank you!

You’re referring to Lone Wolf Legend, correct? It should unlock even though you played offline.

When you say it doesn’t appear on your online profile–is it appearing on your console?

now that you said, it is strange because it has apeared at the console, and now trough the computer, too.

Well, it’s all right now, thanks man!