Kilroy Nuclear Bunker Buster

The K42 Kilroy is a nuclear bunker buster designed to penetrate bases build in a planet's crust. It works like any bunker buster: one explosive detonates, the bomb drops down, then the next charge blows, and so on.

Sensors in the nose detect how many levels there are, and the nuclear bomb, one with a massive four megaton payload, will detonate once it has punctured all of these, or all of the charges have been used. There are eight penetration charges in total.