Biological Warfare

Overview

 * Killing an enemy with a weakspot hit leaves a poison cloud that applies a poison DoT to enemies that go through it. Lasts 5 seconds. Cooldown 5 seconds.
 * The DoT deals 500 damage per second (100 x 5), for a total of 2500 damage over the 5 seconds of DoT. (100 x 5 x 5 = 2500)
 * Unlocked at Rank 39 for players, who have The Last Stand DLC.

Notes & tactics

 * Potentially good on SiMo, since he has good accuracy and therefore better chances of hitting weakspots.
 * Biological warfare tends to shine more in solo mode than in coop, since in multiplayer enemies will also be killed by the partners, the chances of this being bigger if players are more. Additionally, the bigger health of enemies in coop makes for an increased likelihood of towers killing the lumes instead of the perk holder.
 * This perk finds use mainly in the non-survival modes (Campaign & Easy mode), since in Survival it tends to lose its impact over time, due to the increasing health pools of the enemies.