Mass Effect 3: Operation Exorcist!
Unattributed Quote:
(Quote comes from Eduardo Vasconcellos and his article found here: http://blog.bioware.com/2012/04/25/operation-exorcist/
Of course with every "Operation" that EA and Bioware throw at us, there is always a great reward at the end. This time is no different.
Allied Goal: Kill 1,000,000 Cerberus Phantoms (AccursedTank will love this news!)
Squad Goal: Survive until extraction on any map and any enemy on Gold difficulty.
Unattributed Quote:
So not only do you get the chance to get a free pack, but you get a chance to earn a 2nd free pack as well. Not to mention you could easily use this time to boost your Theater of War percentage to 100% and snag that achievement if you still need it, but you can also earn the achievement for beating every online map on Gold.
Coming from experience, I can assure you that Gold missions are NOT easy so if you attempt this, here are a few things to keep in mind.
1) COMMUNICATION IS KEY! If you can't communicate with your team, or like to run off and do your own thing, then I wouldn't attempt this at all.
2) Try to use a combination of different classes. While a team of Quarian Engineers might sound like a good idea, it's not on a gold challenge. Mix it up. Combination powers do wonders.
3) If you can, avoid facing the Reaper forces. Banshees, Brutes, and Marauders can be a huge pain in the ass, even on Bronze.
Good luck and good hunting!