* '''Were you looking for information on [[File:IconOverpower.png|leftMighty Blow]]'''or [[OverpowerMassacre]]bonuses?''' is a Situational [[Barbarian skill]] unlocked at [[clvl|Level]] 18.

A Killing Spree is a rune effect in [[Crimson Overpower]], a situational [[Barbarian skill]]. This rune effect increases the Barbarian's critical hit chance by 10% for 6 seconds after using this skill.  ==Skill RuneEffects==Refer to the [[Overpower rune effects]] placed page for a thorough description of all the rune effects in it this skill, including screenshots and video. {{skill description header}}<skill class="Barbarian">Overpower</skill><skill class="Barbarian" rune="Killing Spree">Overpower</skill>  ==Media== Screenshots and videos will alter be added post-release.  ==Development==Prior to the January 2012 skill in and rune system overhaul, this effect was produced by the [[Crimson Rune]], which granted the following way.effect: