I've played two of the routes so far (without using the walkthrough, I am unreasonably proud of me) and managed to get both good and bad endings in both, though not the worst. (I'm a completionist though, so...)
I have to say, I really love the tension you've wrought; the careful balance of sympathetic and cautious isn't something I see in a lot of visual novels. Usually the horror isn't quite so blatantly due to the romance options right from the start! Very refreshing, and it makes getting a good end really feel like a "win".
I know some people have commented they don't like how... opinionated the MC is, but I actually rather like it. It's also a nice change from the norm and playing a blank slate.