The achievement called Demonstration of purity is not working. I have killed the enemy over 30 times but it has only counted 2 of them. it does not help that there are 2 enemies with the same name and it does not say what difficulty it should be on.

I have killed them on green and yellow difficulty missions but dont count either for achievement of the in game counter.

Only on red difficulty missions they count or at least they did now they dont count on that difficulty