The objectives one is the other one I’m having issues with as well. It’s extremely frustrating and all these achievement issues are one of the many reasons I severely dislike Halo Wars 2. Game has been out 2.5 years and is still not 100% functional.
Postums and/or ske7ch, would it be possible to get some sort of update regarding these achievement issues? There are still quite a number and no definitive way of solving them other than “do everything all over again.” Biggest one for me is still “Palmer’s Pure Gold” among a couple others.I never had any issues with Palmers Pure Gold but the one for completing all objectives. I eventually got it after deleting save data from console and then letting it sync to the cloud when loading game up and replaying all missions again.
Now I'm having problems with a few remaining leader achievements. Win 3 games with Jerome, Yap Yap and Serina wont track for me. All 3 been sat at 33% for ages and wont budge.
I honestly dont know what it is with 343 and Halo games, its an absolute pisstake. Between this and MCC, its been a total farce. Funnily enough though I've never had any issues with Halo 5 and 100% it easily.
I feel your pain. I played it a few days ago for the first time in about a year, hoping these issues had been fixed, silly me.
As I said before, I deleted all save data on console before playing it, then let it sync again. Then I made sure to play through each mission while obtaining every bonus and optional objective in one go. Achievement popped after mission 13 I think.
Make sure you don't save and quit during a mission. Always start a mission from scratch and play it through to the end mission screen, then press A (if on xbox one) so it starts loading the next mission and it should fully register everything you done.
This is pretty much everything I followed from a previous post and it worked first time. Would recommend trying and hopefully works for you as well, good luck.