Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
8/12/2011
11:25:13 PM
Ultra Rare 3.9%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
8/12/2011
11:20:25 PM
Rare 31.6%
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
8/12/2011
9:40:28 AM
Very Rare 5.5%
Team Building
Complete all test chambers in the Team Building co-op course
8/11/2011
11:01:02 AM
Rare 46.8%
Can I Go Home Now?
Win a round of either Rush or Conquest on all four Vietnam levels
6/26/2011
6:30:42 AM
Ultra Rare 3.2%
Just Because I Can
Finish first on the scoreboard on any Vietnam level
6/25/2011
9:40:12 AM
Ultra Rare 3.3%
2nd Tour of Duty
Achieve the best squad award on Operation Hastings
6/25/2011
6:05:33 AM
Ultra Rare 3.0%