I would like to give you a little bit of feedback on what I think would improve the experience a lot.
-This may be a personal touch, but I would have liked a little more sound in the dialogue parts, for example those typical sounds that serve as "voices", reading in complete silence can be a little heavy.
-The ending, I liked it, I think it was adequate, but I would have liked more that some actions/dialogues had more consequences and therefore more of an ending (your husband recovers and they are put to kill each other in a test) for example.
-Small easter eggs, a little more exploration, maybe visualize some objects, a picture of them both, etcetera.
-Regarding the FPS part, I would like a bit more raw realism, one shot kills, characters screaming or showing some suffering, maybe some npc crying, feeling the rawness of the situation, hearing your breathing and being agitated, etcetera.
Kudos!