You shall not pass!
While on defense, prevent the attackers from completing their first objective
3/14/2012
10:50:21 PM
Rare 37.1%
You've saved the Ark
Win all main missions of the Security campaign (not including What-If missions)
3/14/2012
10:50:12 PM
Rare 13.4%
That's how you win a match
While on defense, take down an attacker who's completing a Primary Objective
3/14/2012
6:38:21 PM
Rare 24.9%
