'''Two-stage torpedoes''' are a more exotic version of the cyclonic torpedo. Though the warhead is still the same, the delivery system is radically different. Instead of exploding on impact, this device will burrow though a planet's surface with thermal warheads, and detonate at the core. This will destabilize a planet, and will shatter that world in many cases. They are used against worlds that are devoid of atmosphere or biological life, such as [[Necron]] [[Tomb worlds]]. In one attested appearance only two such torpedoes existed within a sector.{{Fn|3}}