This Seeking Tech guide will explain how you can get the Jaan d’Arc trophy called Heroines of the Battlefield. To unlock this trophy, you need to complete a stage with four female party members.
This can only be done in the postgame when Liane rejoins your party.
For this to occur, you need to complete the second season of the Colosseum. If you need help with these fights, then you can check out the videos below:
By completing the second season, you will get the Charred Pendant equipment. When you visit the Cemetery, you should now be able to switch Cuisses with Liane.
With Liane back in your party, make sure she is well-equipped, and then head to the Chapel in the Woods.
Once you get there, add the four female characters to the battlefield, and then complete the quick stage. The trophy should then be unlocked.