I also had the issue that i already did all the quest and the achievement didn't pop. After a while trying all the tricks told online i came up with a different solution that worked right away. I pushed my current save to online save of Ubisoft. Then i loaded the online save and it popped for me!!!
I hope this helps others.
Just wanted to give you a quick shout out! This appears to still be broken even today and I used your workaround to pop the trophy! Super happy I don’t have to wipe my save and start a new playthrough. I’ve actually already beaten Immortals on both Stadia & Xbox and am playing through yet again on PlayStation 5 for the Platinum. I would have hated to do a FOURTH playthrough, lol. Many thanks to you for discovering this workaround!
Welcome to the forums ChozoCraig, thanks for also sharing this workaround has worked for you, it's always good for us to know if those steps still do the trick!Originally Posted by ChozoCraig Go to original post