Problem with the audio diary achievements in ODST

So a while back I ran through ODST and collected all of the audio diaries, however when I was running through the game and getting them one of the achievements along the way never popped (The one for the 13th audio diary), I continued through the game collecting all of them getting every subsequent achievement(for the 14th-29th) in the series of audio diary achievements and eventually opening allowing me to access the 30th and final one. After collecting that one (the final one) the achievement for collecting all of the diaries never popped and in the achievement progress it shows that there is one left unfound. And now, because my game save registers as them all being found they no longer appear throughout the game for me. So I know I have collected all of the diaries, being as the no longer appear plus I know I have gotten the 30th one, but the achievement for unlocking the 13th one is still locked for me, and the achievement for finding all of them (I’m guessing because “the 13th one was never found”) My achievements have been like this nearly since the release of ODST (When I decided to go through and get them all), I have been waiting for my game to catch up and unlock them but to no avail. I am stuck here, I’d like the 2 achievements that I know I have gotten. Does anyone know any ideas or any way to help my problem?

This is the forum for the MCC, so I’m assuming you are talking about the MCC achievements and not the Xbox 360 game achievements.

Either way, you should be able to start a brand new campaign and collect exactly thirteen audio diaries, which should pop the first achievement. Then it will just be a mystery if it will count for the 30th or not.

Worst case scenario you’re probably looking at re-collecting all 30, but it shouldn’t take you too long.

Yes, ODST on MCC

How do you mean a new game? As is instead of resuming hit new game?

I’ll give that a shot and see what ahppens