Bioware announced the N7 Challenge taking place this weekend titled Operation BALLISTIC:
“Operation BALLISTIC (Jan 25th-27th)
Event Description: Recon has new estimates on the number of Reaper creatures, and the news is dire. Each of you must inflict as many casualties as possible, and we must destroy husk-creation mechanisms like Dragon’s Teeth. If we fail to accomplish this, we will be even more outnumbered in the coming days.
Individual Goal: Earn any gold weapon medal (Assault Rifle/Heavy Pistol/Shotgun/Sniper Rifle/Submachine Gun).
Reward: Commendation Pack”
Basically, what this means is that you just have to earn a gold weapon medal. Make sure to add that to your busy schedule for this weekend.