This solution counts both for this achievement and
This achievement will pop at the last main mission. Talk to your ArFA-sys, she will ask if you are ready to fight Death Gun (he isn't the boss but it's what she thought). You will get 3 options:
- Let me think about it a little more.- I will fight to protect Kureha.
- I will fight to protect Zeliska.
Choose Kureha and she will be the one that doesn't die during one of the last cutscenes. Then after the game finished the achievement is yours!
The game will ask you to either rewind time or not. Rewinding time will bring you back to the mission at the Underground section of SBC Glocken. You should rewind time and do those missions again, it doesn't take much of your time! Then talk to your ArFA-sys again. The same options will appear:
- Let me think about it a little more.
- I will fight to protect Kureha.- I will fight to protect Zeliska.
Choose to protect Zeliska this time. Fight the final boss again, you will get pretty much the same cutscene but with Kureha this time with a different dialogue. Achievement is yours!