Girl of Your Dreams Trophy in Gal*Gun: Double Peace

For this route, all you need to do is play The Unseen Destiny/True love route. You can it pick after you beat all other routes and reach Episode 1-2 again where you can pick your route. To get the ending, all you need to do is to max out affection with one of the many girls, do her final fight and complete the Final Doki-Doki Mode. Refer to Complete Profiles for Every Girl for more info on how you get max affection.