Overview
Credit goes to Link0306 for putting this flowchart together; if they happen to see it here on steam, I give full credit to them, and thank them for their hard work years ago. Special thanks goes to Mages for putting this game on Steam so all can enjoy it! This image is an awesome wallpaper submitted by ajak60 for wall.alphacoders.com. Potential spoilers may follow, so be wary. :)A link to the pdf is here: https://drive.google.com/file/d/0B9fx11CBibMzd0dpYkRjNldpNHM/view?usp=sharingHopefully it will help with the unintended brightness of some of the images.
Flowchart
Edits
09/09/2016 Added link to the original pdf.
11/30/2020 Thanks to Boss Hogg:”starting from the second playthrough during some dialogues a little red icon appears; it resembles an antenna. Well when this icon appears it means that the cell phone can be used to CALL other peoples without receiving a clear cue from the game.
The extremely annoying thing is that icon gets ignored by the “skip” function.. meaning that you HAVE to KNOW the exact moment it appears .”
(Needs Testing) Hero of RaiNet can apparently be gotten in one or more playthroughs, and some mails related to other trophies: [link]