Adapt and Overcome
Blow up 10 explosive objects, killing at least one enemy each time. (campaign only)
8/1/2012
5:46:17 PM
Rare 16.9%
Total Shutout
Win a Table Tennis or Beach Volleyball match without losing a point
8/1/2012
3:23:16 AM
Very Rare 7.1%
All Star Performance
Earn 9 Challenge Stars in a single Challenge Set
8/1/2012
3:12:10 AM
Ultra Rare 3.0%
No Weak Links
Complete a Challenge Event, where every player scores more than their share of the 3-star target score
8/1/2012
3:04:43 AM
Rare 14.7%
Marksman - Small Arms
Kill 100 enemies with any pistol or SMG. (campaign only)
8/1/2012
2:21:37 AM
Rare 31.7%
Competitive Spirit
Complete a multiplayer game, while representing a nation
7/31/2012
6:51:23 PM
Common 68.8%
Get Off the ground
Kill everyone in the convoy from ground level, except for Kreidl
7/31/2012
5:20:21 PM
Ultra Rare 2.4%
Up to the Challenge
Complete all Challenge Sets for any controller type
7/31/2012
4:29:42 AM
Ultra Rare 3.3%
Target Eliminated!
As a sniper in Overwatch, snipe 50 enemies tagged by your partner
7/30/2012
5:38:57 PM
Ultra Rare 1.7%