Burrowers

Burrowers are a subspecies of insectocyte remarked for their' ability to burrow for short distances thereby lending cover from tower fire. Thumper towers prevent this ability rendering burrowers vulnerable to all offensive towers. By default though, there is too much delay for a mortar tower to hit a burrower and laser towers do not very often get a hit in.

These infernal foes are first encountered in incubus, the first part of zeus. Burrowers are not especially tough and do not greatly damage towers from attack, but surfacing they are unable to be targeted for a very brief period. This means towers have less than half the time than with normal enemies that they have with burrowers to acquire a target and attack. It is good then that burrowers offer good resources for defeat.