X series, a series of individual weapons developed by the Star System Federation Weapons Research Institute.
Of course, in terms of power, it can't be compared to an orbital gun, but in the single-soldier weapon series, the X series is basically the ceiling.
Of course...attack items are counted separately.
This thing is a bit different and cannot be included in the statistics system.
The X series is numbered according to their power.
For example, "X-18 Water Soluble Plasma Cannon" and "X-15 Cosmic Rays."
Both are single-soldier weapons of the X series, with the Cosmic Rays ranked X-15 and the Water Soluble Plasma Cannon ranked X-18. The Cosmic Rays rank three levels higher than the Water Soluble Plasma Cannon in the X series.
As for the "X-15 Cosmic Rays" he knew, it used various energies to simulate cosmic rays for attack, that beam of light similar to a starburst, any enemy touched by it would instantly melt, even buildings would be the same.