Spoilers :
I hadn't played the game in about 2 years and I've caught up on everything so I'll have a bit to say. I really like the captain. Serious, charismatic, hot, strict but still caring and comforting towards his men. Each of his appearances is much appreciated. That said, I have my doubts about him, particularly because of the night Ludwig was cursed. I find it strange that, as captain, he didn't notice when two demons were fighting inside a soldier's room. I suppose he was affected by Sloth's spell.
I find it frustrating that Resnick doesn't want to talk about the two suspicious individuals he saw. It's better to talk about it rather than wait for these two men to do something irreparable. Even if the captain or someone else doesn't believe him, at least he won't have any regrets. But I imagine that after everything that's happened to him, I can understand why he'd want to keep a low profile. Besides, the fact that he doesn't want to talk about it even to his own brother worries me. It gives me the impression that Russel is potentially suspicious, but i'm a bit paranoid, so it's probably nothing.
In any case, the concept, the story and some of the characters (Garett ♥) are very interesting. I really like the way you've expanded the universe, particularly with the help of the purple words. I applaud this work!