I tried searching for this, and could find similar posts, but not the same - so here goes.
I kileld all enemies on a scavenging mission, but it doesnt appear to have registered the final kill or something.
I have sent my men all over the map to try and find one last enemy - and nothing - this appears to be game-breaking. Unlike others who have reported similar bugs, I didn’t get the ‘complete’ screen. I can still move around etc, as though there is one enemy - but if there is then he is being very shy!