Hey there, picked up a copy of Halo: MMC to play through the campaigns on Legendary so I can get that super -Yoink!- Helioskril set on Halo 5. The problem is that I’ve beaten Halo 2 on Legendary (some solo, some co-op) and noticed I didn’t get the achievement “Legendary Anniversary” which was disappointing because looking through the missions it shows that the highest completion for each of them is Legendary. I’ve looked through the forums to try and troubleshoot my problem but the only thing I saw was to check my service record. The mission that showed up missing was Gravemind (Which I solo’d on Legendary, thank you very much) So on the actual copy of MMC it shows that I completed it but my service record says otherwise. If anyone could give me a slice of advice that’d be amazing, thanks in advanced!
Link to screenshot of Gravemind solo completion on Legendary : http://imgur.com/6JiHg8A
Link to screenshot of Gravemind missing from my service record solo/co-op : http://imgur.com/gallery/eYFMY (co-op is the first picture, thus the blankness)
(Unrelated) A really -Yoink!- 'nade : http://xboxclips.com/NotReallyFizzle/6ebc3841-88b3-4fe5-8557-03e18444504c