Bloodletter

Overview

 * You deal 100% extra damage for 12 seconds after killing 4 enemies
 * The perk is unlocked for players, who have the Ruins of Brightholme DLC, at Rank 29.

Notes & tactics

 * This perk is a potentially good pick in scenarios, when the player plans on relying more on weapons than on tower damage.
 * It tends to shine more in Single Player 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.
 * It is preferrable in non-survival modes, since in Survival it tends to lose its impact later on, due to the increasing health pools of the enemies. Even if Concussion rounds is picked, last-hitting the enemies goes mainly to the towers.