If you look at the Xbox One Smartglass app under Halo MCC Achievements, you can see which ones you have gotten but haven’t popped on the console yet. They will have a 100% after the achievement name. The tracking seems to be working, but the actual unlocking of the achievements is the problem.
Yeah I’m finding this also, got about 10-15 cheevos all finished but not unlocked. Has anyone had this problem and managed to resolve it?
Ahh I see it too. The two sides aren’t talking to each other.
Yeah mine were not unlocking yesterday, but when I came on about an hour ago they’d all unlocked. The in-game unlocks haven’t though.
Same here but now they are working fine. There were just a few within about 5 hours that say they are unlocked in the game but not on the achievement list. If you go to stats within Halo MCC, there is a section for achievements and the ones that were finished should have a white bar below them. The ones that are unlocked normally show the gamerscore amount but the ones that were glitched simply show the white bar, I went back and tried to get one that was glitched (Blackeye from Halo 2) and nothig popped so I think it knows I have it but the servers are just waiting…