Hold Your Ground!
During a campaign defend your encampment without losing a single victory point
Sieze the Initiative!
Capture an encampment by seizing its victory point.
Kill 1,000,000 men in battle.
These seem bugged for me, I know that the first two listed are a known issue but I would expect a fix after so much time for this bug-it would literally take seconds (as this was included in the original game, so an update destroyed this achievement, just revert it back please or update the achievement conditions)
I have killed over 1 million enemies in grand campaign.
Does it not count if you auto-resolve?