
There are few video game weapons more iconic than Final Fantasy VII’s Buster Sword, the absurdly oversized blade of Cloud Strife. As you might expect, the blade plays a central role in Crisis Core Reunion as well, even divulging the surprisingly humble origins of the weapon. There’s even a brand-new mechanic that revolves around the Buster Sword, giving Zack a new “Battle Stance” for more powerful attacks, as well as a new stat called Buster Sword Proficiency. Leveling and powering up Zack has always been confusing, so here’s a detailed explanation of how to level up and increase Buster Sword Proficiency in Crisis Core Reunion.