Bunker Buster

The Bunker Buster is a missile that drops straight down from the sky. Upon meeting a surface, it digs through for a distance of roughly 3-4 worms stacked on each other's heads, then detonates. As the name implies, it is useful for attacking worms that have chosen to bury themselves or are otherwise sitting under a barrier. Can also be detonated mid dig with the fire key / spacebar.