As some already said, play without it. The game is pretty straightforward, and on some places the wrong answers are funny to see. Not to mention is easy to go back.
The only place I had to use walthrough was on hospital for the damn code. I could find everything besides that, I still have no idea how to get the damn code lmao. I like quizzes but that's maybe the only spot I could ask for a bit more hints, at least where to search.
Just curious Caribdis, are you expecting finishing the game at version 1.0? Or will you may do aditional routes, depending how much people like the game?