The Noxious Swamp

In-Game Description

"These swamplands are impregnated with a nauseating smell that emanates from their polluted waters. In this region the infected seem to have mutated into a more amphibious form and their putrefying bodies generate a lethal poison that they can spit from a distance. It is necessary to clean this nest of infected or else it will become a problem for our colonies in the future."

Overview

This map starts with little common infected, but thousands of Venoms already present. The last wave consists of Venoms as well.

On 800% difficulty all waves consist of Venoms only.

Strategy

Towers are important for both protection and range advantage.
This map contains complex layout. Explore carefully, as surrounded by Venoms from both side will easily lead to the doom of your exploring army. Remember to place towers with some soldiers/snipers at choke points to provide cover.
As the map shows, coming from the "North" means "North-east", while "East" means "South-east".
It is highly recommended to build a killzone with towers and Great Ballistas to deal with Venom swarm. Walls don't need to form a line to take damage, as Venoms has area-of-effect attack. For the late-game swarms, an army of Titan is recommend.
Venoms can attack through those narrow lakes. Be careful if you want to build constructures next to them.
The east and south-west coast are basically safe from swarms.