The achievements tab has been sitting with a ! on it since the last update, probably because I had already earned Stock Piled (upgraded everything to what was needed). Now that the new DLC is out... it hasn't triggered. I've got ticks over in the tab, but no points for it, and it isn't sitting atop the list, it's still at the bottom. Waiting for Microsoft to add it or something to its system? Do I need to go and push my Silverback to level 4 (the only fortification that isn't max) to get it to trigger do you think?