Hello, I just recently got the "keg whore" achievement for the skirmisher and decided (since it has been a long time since I unlocked an achievement) to check out the achievements I still haven't unlocked. I saw "6/8" on the HK the locked achievements were the 1M damage one (only 1/42UURB left to go ^^) and pris de fer at 3 kills out of 100... months ago I actually just tried and tried to unlock this achievement and got around to 60~ kills, got bored and played other stuff.
I just realized I should've just been straight to the point and not have a whole backstory to this oh well. So mr. dev dudes if you werent aware of this little bug, well now you know! And has anyone else run into a similar situation?