Hey there, fellow Final Fantasy VII strategist! When it comes to materia management, I recommend focusing on leveling up your most essential materia first, like HP Up, Magic Up, and Elemental materia paired with the right elemental damage. As for mission walkthroughs, make sure to explore every corner of each area to find hidden items and secrets that can give you an edge in battles. When it comes to character development, don’t neglect any party member – each has unique strengths that can be crucial in different situations. Keep mixing up your party to adapt to various challenges! Hope these tips help you on your journey through Midgar and beyond!