Will there be a walkthrough because sometimes a guy just wants to experience the good shit without writing notes and using Theseus' ball of thread to make sure he doesn't get lost.
The achievement checklist is basically the walkthrough. Because there are so many branches, a straight walkthrough wouldn't work, but since thirty-five of the achievements match up with the game endings, the hints on those will tell you how to get there.
Every achievement on the list after "the grass is greener" is an achievement for getting a particular ending, except for the very last one.