Blood for the Blood God
Complete Chaos Invasion Arena 2.


Death to the False Emperor
Complete Chaos Invasion Arena 1.


Frugal Spenders
Complete a Chaos Invasion Arena without your team using any lives.


Heretic
Complete a public Co-op game in the Chaos Invasion mission.


Kill, for the Sake of Killing
Complete 3 challenges in one Chaos Invasion Arena.


Skulls for the Skull Throne
Complete Chaos Invasion Arena 3.


Glory to the Dark Gods!
Achieve a team score of higher than 270,000 in the Chaos Invasion mission.


Let the Galaxy Burn
Complete the Chaos Invasion mission.


Let the Heavens Bleed
Defeat the Chaos Invasion bonus wave.