I played through the game for the first time on Super Soldier, when I look in the campaign stats I have 19/19 for all difficulties, I have tried resetting the cache and have replayed the final checkpoint numerous times to no avail. the achievement for finishing on Super Soldier remains Locked.

Thanks guys for making such a great game thoroughly, thoroughly enjoyed it, and I intend to play it through again now on SS to try some different tactics, however is a patch due to fix this issue, and if so should I wait so when I play again I get the achievement, AND should I start a new game, is the issue with my save game file?

any help would be greatly appreciated.

Simply just try to start a new campaign. All Nano module unlocks will remain in the new campaign. For some people here that helped. They got the cheevo right after ending the intro in a new campaign after they finished it.

cheers