Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
12/24/2012
6:57:07 AM
Very Rare 6.0%
Blowing in the Wind
Retrieve every page for one of Ben Franklin's Almanacs.
12/20/2012
9:56:14 AM
Rare 18.6%
House Party
Recruit any of the Artisans and see them settled on the Homestead.
12/18/2012
9:00:36 AM
Common 51.3%
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
12/18/2012
3:21:42 AM
Rare 15.7%
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
12/18/2012
1:12:15 AM
Rare 20.6%