Pathfinder
Guide the squad through the Soviet outpost without them getting killed.
10/24/2011
4:06:29 PM
Very Rare 6.0%
Lord Nelson
Destroy all targets and structures while making your way up the river.
10/24/2011
3:57:13 PM
Rare 10.3%
BLACK OP MASTER
Complete the campaign on Hardened or Veteran difficulty.
10/24/2011
2:05:57 PM
Ultra Rare 2.3%
Burn Notice
Complete "Rebirth" and "Redemption" on Veteran difficulty.
10/24/2011
2:05:51 PM
Ultra Rare 1.1%
I hate monkeys
Kill 7 monkeys in under 10 seconds in the Rebirth labs.
10/24/2011
11:44:09 AM
Ultra Rare 3.9%
Not Today
Complete "Crash Site," "WMD," and "Payback" on Veteran difficulty.
10/24/2011
11:20:35 AM
Ultra Rare 1.2%
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
10/23/2011
10:11:25 PM
Very Rare 6.0%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
10/23/2011
10:08:14 PM
Rare 15.7%
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
10/23/2011
9:08:49 PM
Ultra Rare 1.8%
Party of Three
Find the hidden companion cube in co-op test chamber
10/23/2011
8:46:48 PM
Ultra Rare 2.9%
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
10/23/2011
8:30:32 PM
Ultra Rare 2.8%
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
10/23/2011
8:18:30 PM
Rare 31.6%
Delta: Act III
Complete 'Core', 'Paradise Lost', 'Exodus' and 'Reckoning' on Delta difficulty
10/23/2011
7:07:04 PM
Rare 10.9%
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
10/23/2011
6:13:33 PM
Ultra Rare 2.1%
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
10/23/2011
5:49:20 PM
Ultra Rare 4.6%
Delta: Act II
Complete 'Assault', 'Onslaught' and 'Awakening' on Delta difficulty
10/23/2011
2:23:28 PM
Rare 11.3%
Delta: Act I
Complete 'Contact', 'Recovery' and 'Relic' on Delta difficulty
10/23/2011
1:01:37 PM
Rare 11.8%