Invader

Invaders are defence-breaching enemies that appear during the Defence levels. They spawn in different sizes, types and classes, and they will attempt to destroy the player base by marching towards it. If the player takes too long to kill them and they get too close, their defences will begin to take damage. If too much damage is dealt, the level will end.

Melee Invader
These types of invaders do not have any ranged ability, and will only deal damage if the player's defences are in reach.

Ranged Invader
These types of invaders will not use swords, but will use their bow and arrows instead. They will only shoot if they are halfway in-between the player and the enemy defences.

Pyro Invader
These types of invaders will telegraph their appearance with a sound, and will only deal damage with their flamethrower. They will stop walking when they are close to the player defences.

Magic Invader
These types of invaders will not use any weapons, but will instead use magic orbs to attack defences. They will often use magic to heal themselves.