He doesnt necessarily need to have visible strings attached, since a pixel width is pretty thick at this resolution, they could be implied by his being suspended slightly above the ground, or even just by his feet just dragging across the ground instead of walking.
It might also help if his head hung at an angle as well, which could have the added bonus of making the sword look more natural in the lowered position.
It might also help if his head hung at an angle as well, which could have the added bonus of making the sword look more natural in the lowered position.