Operation Prophecy weekend in Mass Effect 3
EDIT: In this video I said you get two commendation packs for completing the goals, you only get one.
Challenge Goal 1: Extract once on each Earth map (London, Vancouver, and Rio).
Challenge Goal 2: Score 100,000 cumulative points against Reaper enemies.
Challenges can be completed at any difficulty.
Completion of both goals awards the player a Commendation Pack.
Completion of both goals also awards the player a banner, "Hero of the Last Days."
http://blog.bioware.com/2012/12/20/operation-prophecy/
There wont be another Weekend operation until January 7th, read about it here:
http://blog.bioware.com/2012/12/20/operation-prophecy/
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