Darth mod and Achivements

[Dilion]

Hoping someone will see this and can help me answer this.

Im trying to get my 100% completion of Empire total war. I have gotten all achievements so far except the two ones that require you to complete the campaign on medium and hard difficulty. I have now completed the campaign on Very Hard twice but didnt get the achivement. However, this was the Ultimate Early campaign rather than Grand Campaign, does anyone know if this is the reason why I did get the achievement? or if Darth mod in itself makes it unable to count for the achievement?

Im going to start a Grand Campaign now and see if that counts for the win, but hopefully, someone knows the answer and I can save some time in case its a futile attempt.

[Dilion]

Just completed another 1750 campaign on very hard, this time using the Grand Campaign 'campaign' form the launcher. But still didnt get any achievement.
- Do I really have to get the achievement playing vanilla?
- Or could it be that i played with the "No Forts" setting on and the changes that makes to the campaign map, makes steam not count it as a correct win?