I just finished it and finished reading through the files. It's interesting because from other's reactions I expected the game to be riddled with plot holes or deux ex machinas towards the end. In actuality it was the opposite for me; nearly everything was wrapped out neatly, and if anything my issue is that, being logical, a large part of it was much more predictable than in the other two games. This is definitely the one in the series with the lowest WTF quotient, especially during the ending.
I was completely baffled by the decision to leave the epilogues as "file" entries, and worse,
give absolutely no indication whatsoever that this was the case. It's particularly odd considering how the game ends and that there's no epilogue to the true ending, but there is to some of the others! Kind of seems that's where the money ran out, but would it have killed them to include a "Post Payoff: Carlos (1) file [and so on] unlocked!" message after the end?
But the entire game literally is about Delta being nigh-omniscient of all the timelines thanks to his mind reading of SHIFTers. If you doubt that, the entire game falls apart. There is literally zero (heh) he hasn't accounted for, from his point of view he's basically going through the motions so that there's indeed something for the SHIFTers to predict and he, in turn, mindread in the past. At this point he's basically Paul Atreides post-Dune. I mean, without that, how did he even know about the terrorist extiction future, the Radical 6 outbreak future, let alone how to choose between them? How would he engineer his own conception? And so on and so forth.
To me it's quite obvious that message is prerecorded. Unless I'm missing something, it seems more puzzling (and more crucial to the plot) how he learned about his own conception and the extinction futures (both terrorist and virus). He has to have read them off a SHIFTer's mind far back enough to have time to prepare the entire plot, but who? It seems none of the cast know about the terrorist future when the game starts, even via SHIFT, let alone that far back.
Also, I don't think Diana faked for a second having multiple personalities. Hell, I fully expected she would not leave in the first place. You can rationalize that (fitting, since rationalization is a theme in the game) that she stayed because she either felt too much guilt to allow herself to get away scott free, or believed to have unfinished business in the shelter (like finding out who Zero was). It's doubly interesting because it's pretty much spelled out by the game she only pressed the button in that branch because Zero mindhacked her.
