All Options Considered Trophy in Gal*Gun: Double Peace

There is a total of 8 True endings you need to see. They are:

Most of them are straight forward as long as you get a S rank and max out their affection points. However the Patako ending requires you get 2 pieces of a Halo before you can access it. You get Halo #1 by beating Maya and Shinobu's routes, both with the true ending and you get Halo #2 by beating the Angel & Demon routes with true endings. As soon as you have both pieces of the Halo you can do the Patako ending. The Patako route is available when you go through the Kurona route after Episode 6-2. You will get a question to which you need to answer "Help me, Ekoro!" it will take you to her route.