Defiance 2.303 (hotfix)

PS3, PC & Xbox 360 Date:
NA: 10/30/14 @ 2:00 AM PDT
EU: 10/30/14 @ 3:00 AM GMT

Source

HALLOWEEN EVENT
* Fixed an issue causing some enemies in the Halloween events to drop non-Halloween items.
* The minor Halloween Arkfall, Revenge of the Plaguers, should no longer reset back to wave 1.
* Corrected the firing sound effects on the Blackened Hellfire Blaster, Blackened Hellfire Fragger, and Blackened Hellfire Quick Repeater.