There is an issue where the voice lines are not playing. When I first started playing, the voices worked correctly for Leah and Valorie; however, once Sanura was added to the team, they only played sometimes when the dialog box indicated they should be speaking. Later into the gameplay, they don't play at all by this point. I have played through most of the game on the same save file.
This is the first version of the game I have played. The new Brasswall expansion is the version, so I wonder if this is a known issue. I searched to see if others were having a problem and didnt see a post.
I checked the language is set to English, and all 4 volume settings are at %100. To attempt to toggle the voices and characters on and off using the gameplay options. I tried restarting the game with voice lines off, rebooting, and turning them on again. I tried changing who the squad leader was. Finally, I redownloaded the games, and the only old portion was the save file. I did this by copying the save folder contents into the save folder of the new downloads after starting a new game so the save folder would be generated.