However, you'd need to look that up on a case-by-case basis. While the majority of games do not sync achievements that have been earned in offline mode, there are certain games which do, such as Borderlands. See this question, though note that there are exceptions to the rule. Is it possible that you could've lost connection to Steam at the time you acquired the Terror Gauntlet (I don't have the game so I don't know what triggers this)? If so, it may have missed that 'trigger' and it would not have registered with Steam. This is what I would assume first would be the culprit. Unfortunately, that means they will not appear later when everything returns back to normal.

During this time, your stats and achievements may not be recorded. If you notice that stats or achievements do not appear to be tracked, or previously attained stats and achievements are missing, that is a good sign that either stat tracking is temporarily down or that you may have an Internet connection issue. If you would like to ensure that your achievements are tracked correctly, please do not play your game in any of these modes. I've bolded the items that could apply:Īchievements are not recorded while playing in Commentary Mode, Offline Mode or when sv_cheats is set to 1. From the support article regarding achievements.

Portal 2 no steam not working