Impaler

Impaler
Impalers are similar to lurkers in the sense that they are burrowed and deal high damage while having low health. They deal extra damage against armoured units, and can only deal damage to one unit at a time. Thus, in a way, impalers are much more deadly to characters than crap patrol units. Players require detection before advancing into areas that are full of lurkers and impalers, such as the leviathan's lair.