2.5 out of 5 stars.

I would suggest that you render in a higher resolution and larger dimension to rid your images of the jagged looking edges. Then again, a quick fix that could be applied easily would be the smoothing tool. The swords appear quite messy and too round to actually resemble swords. Flatten the blades and they might not look so much like rockets.

3.5 out of 5 stars.

I second cdl about the swords. You should flatten the blades to make them look more like swords. The rest of the icons look nice. When you are about to transfer the rendered image into the icon, I would set the dimensions from 256x256 to 10Kx10K*, and then convert the image into the icon.