Honestly, I would recommend removing the walkthrough in the OP.
The moment i saw this walkthrough, my first impression of the game went right out the window, I couldn't even bother to play the game. I can't speak for others, but I usually take a small peek at walkthroughs to get an idea of how "decisions" influence the game; but god damn, the moment i saw this gargantuan excel chart, I almost decided against playing this game.
The story progression is actually very linear, but that doesn't take away its charm. I've been lurking on this website for years and i can tell you for a fact that this game deserves all the praise it gets. Don't be fooled by the walkthrough! Just play the damn game!