This is a walkthrough for the English version of Dies irae – Amantes amentes. The Japanese walkthrough it’s based on can be found here.
So I wrote up a quick English walkthrough for Tokyo Babel, for people that don’t want to use the Japanese one. I’d recommend going in the same order as the guide, that is, Raziel –> Sorami –> Lilith.
Note: You can only enter Lilith’s route once the other two routes have been completed.