Airborne Troops: Countdown To D-Day Gallery pictures
Successfully complete all secondary objectives for a mission to unlock the bonus gallery pictures for that mission. To see the pictures, highlight the yellow tack at the mission selection screen, then press X.
Knife
Always use the knife; silent kills work best and will not attract other guards.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original