you finished every route right? I think my achievement popped up my fifth or sixth completion or something

either aoi route or true route

I did the Aoi route and the True route again, but I didn't obtain the achievement.
So I tried Ricca's route a second time, then I got it during the 3rd mission, though I don't really know if that was the way it should have been unlocked.

But thanks for your response Junkwisch. :)

Originally posted by Lunel3829:

I did the Aoi route and the True route again, but I didn't obtain the achievement.
So I tried Ricca's route a second time, then I got it during the 3rd mission, though I don't really know if that was the way it should have been unlocked.

But thanks for your response Junkwisch. :)

Same, I had only unlocked this achievement after doing Ricca's route another run.

http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=784455240

Check this guide.

To add some clarity to this achievement requires some spoilers:

It's subtle, but in the game the scale of crimes and danger caused by the culprits of each Queen's Mission escalates bit by bit with each successive loop of the story.

You have to view the briefings for the Queen's mission for both the initial loop, and the final loop to earn this achievement. Most players will miss this if they're save-scumming.

Most of the achievements are story based. So if you just follow the routes as required, you should get most of the achievements.