BioWare celebrates Halloween with a special set of spooky Mass Effect 3 multiplayer challenges starting today, October 31 to Monday, November 5 (9:00 am PDT).

The BioWare blog writes, “Unnerving reports from the front indicate that the Collector reinforcements are more numerous than we feared. At this point, we do not know if our numbers are accurate or if psychological warfare is at work. We need to engage the enemy to assess their true strength.”

Halloween Challenge – Complete the three Halloween challenges to earn the Halloween Challenge Banner.

Ghostbuster: Requires 5 extractions on Firebase Ghost or Firebase Ghost Hazard

Zombie Hunter: Requires 7500 points against husks/abominations.

Monster Killer: Requires 10000 points against brutes/scions/praetorians/banshees.

All challenges can be completed on any difficulty.

Are you going to be hopping on Mass Effect 3 multiplayer to complete some of these challenges?