I’ll update how it is going.
So the achievement unlocked today for me after completeing a firefight on March on stormbreak.
Before this I had my first update on my progress to 33% when I won my first ever match on Escape from ARC (note I had won on the other two maps prior to this happening with no update on the progress). Soon after I won a match on Raid on Apex 7 which counted as well (Which I had won on before) so at this point I had 66% completion on the tracker. Then after a couple of days of winning on these (and other) maps multiple times, no progress. I played one match of firefight today and the achievement popped.
If anyone hasn’t got this achievement here are my stats and advice.
March on stormbreak. 9 wins, 10 losses
Escape from ARC. 4 wins, 3 losses
Raid on Apex 7. 10 wins, 11 losses
What I would say to anyone who is confused and wants the achievement to pop is, if you have won on each map (which you can check by hitting start in the main menu and going to service record) then don’t panic and don’t keep playing more and more games trying to force it to unlock. I would take a step back and then come back to it in a couple of days time, and then play some firefight (or Warzone if you want, but that isn’t what worked for me).
I haven’t found any correlation between destroying the enemy core or finishing at the top of the leader board. Playing the maps in a particular pattern backing out/leaving game/dashboarding and quitting it all seemed to be unaffected. So, you can use these methods (in moderation!) to make sure you play on the maps you need.
I have looked on many other forums and (I feel) no one really knows for sure what makes this achievement unlock. For instance, I helped my friend get this achievement (after I had unlocked it) and he only needed to win 3 matches on March on Stormbreak and 1 in the other two (on Warzone). And it finally unlocked when we played one match of firefight on March on stormbreak.
Good luck and I hope it pops sooner for you guys than it did for me.