Shadow - Normal Zombies

Description
The Shadow is a zombie encountered on wave 16 during Normal Mode which has 22 health and a speed similar to the Icy.

Appearance
Shadow has transparent purple skin, and chains on both arms, with the right arm having 2, along with a purple fire effect.

Strategy
The strategy to defeat the Shadow is to use medium - high DPS towers that have Night Vision enabled, preferably:


 * Laser Gunner
 * Starcatcher (Concept)
 * Level 3 Scouts
 * Firework Fanatic (Concept)

Ability
Shadow has the unique ability to only be detected by certain towers. If your towers don't have Night Vision, then you should start to panic.