This achievement is temperamental, but it still is attainable. Most of the time you will not get the achievement after you fulfill the requirements for it. If you are playing in a squad and you get the top squad award in-game for each map then you still might not get the achievement.
Most of the time people get the achievement while they are playing alone, not in a squad. If you can't get the achievement while playing in a squad, then leave the squad and keep playing and you should unlock the achievement. No one really knows what makes the achievement unlock though.
A discussion on this matter can be found here.
Possibly fully glitched for some players.