The Spiral of Carnage was the upgraded version of the Spiral of Death. It fired three multiple shots at once (due to two additional fission capacitors added to the weapon) and was also purple instead of blue. It had one disadvantage; a much slower rate of fire because all three blades had to return.
"Congratulations! You’ve just upgraded to the Spiral of Carnage! Two additional fission capacitors have been added to your weapon, allowing for three simultaneous energy spirals."