So, it didn't pop for me, but I have 5 and 7. Anyone else? How can I fix this without replaying the WHOLE game?
Have you tried emailing Support? Some of my achievements didn't work for Liberation and they worked their magic and they got fixed, I don't know if it would work but worth a shot...
Sequence 4 didn't pop for me, I have 1,2,3, and 5 so far.