I played for a few hours last night, getting to the second base camp in the first open area (trying to be as non-spoilery as possible). I noticed not a single Achievement popped, which seemed odd for hitting some story beats. I looked at the Achievement app, and I had 4 or 5 achievements showing as 100% done, but still locked. Followed the troubleshooting steps on Xbox.com, contacted their chat for the hell of it, and the rep mentioned there have been some issues with this game. I unlocked a few Battlefront achievements earlier in the day after the new dash had rolled out, but RoTTR was the last thing I played. Didn't see anything else online so I don't know how widespread it is, but thought it was worth a mention.

Bummer!!! I know I had something like that happen as well with one of the story achievements, but I had not noticed at all. Then a day later it popped up saying I completed it. Took me a second for it to click that that happened a few game play hours ago lol.