I played the game once myself, and then played it again using the walkthrough. However, the game status shows that I still haven't read around 1800 language blocks.(15563/17388) So... we are expected to miss around 10% of the content when using the walkthrough? Maybe there could be a more detailed walkthrough like that of "once in a lifetime". I'd like to find out the missing content even if they do not belong to the "best" route.