I can’t get Ashes to Ashes and Sight Seeing even after doing the requirements multiple times. As you can see I have done these achievements in my halo waypoint stats for maps played.
Yeah, this has been a know for probably a year or so now. It mainly affects the cumulative achievements.
Here is the official achievement problem thread.
https://forums.halowaypoint.com/yaf_postst236154_Halo-4-Achievement-Issues.aspx