Removable limbs! What a brilliant idea!
Basically, you would have 4 slots (2 for arms and 2 for legs) and you could remove your original limbs and replace them with prosthetics of your choice! A kind of medieval cyber-implants!
For example, consider this setup:
Left arm: Rusty hook
Right arm: Auto-rotating morning star
Left leg: Huge, double-bladed axe
Right leg: Wooden peg-leg (blunt weapon for taking prisoners)
And you would have 4 attack buttons (one for each limb) in a Tekken style, chaining wild combos! In action, you would resemble a rotating shelf in a hardware store!
Hey, it's even better than fighting with two swords, even more realistic! You could attack from 4 direction simultaneously, totally unblockable!