What would a Warrior be without their sword?
RPGverse has a weapon system similar to that of Fire Emblem in order to deal with the sheer amount of classes available; not everyone can use a unique weapon type, after all. The FE influence comes through via weapon mastery, where a person who uses a certain type of weapon continuously throughout their life will 'rank up' and become more proficient with it. While the whole 'getting better at something through practice' concept isn't exactly unique, the mastery system is an easy way to categorize someone's skill.
Mastery is measured from E rank to S rank, where E indicates an absolute beginner and S is an extremely-experienced master.
Blades:
Projectile:
Blunt:
Shields also have a level of mastery associated with them.