I just finished the campaign (AMAZING!) on Supersolider difficulty on Xbox 360, and the achievement didn't unlock. I got the "Any difficulty" and Veteran difficulty achievement's, and i didn't change difficulty at any time during the campaign. And if i look at the mission list, it says that i've done all of them on Supersolider. So, is this a bug or i have to do something more to unlock it? Thanks

I had a minor issue with this as well, but something simple got it for me. Try playing through the intro level "In At The Deep End" again on Supersoldier, and it may unlock the achievement for you.

^^Didn't work for me.

Yeah the Into submarine mission counts aswell.

same here (sad face)

Now I have to remove the hard drive and do it again.

Bah >.< It didn't work

A quick question for you guys that have had problems. During your playthrough did you use the mission select option before you completed the game?

Same thing happened to me last night. I went back to the replay missions screen to confirm the difficulty wasn't accidentally changed, all say it was completed on supersoldier.

This glitch seems to have affected quite a lot of people. I'm probably just going to put off playing through again on SS until Crytek releases a fix for it.

^^Me too.