Can't touch this
Use a hammer to kill a series of 15 zombies without taking damage.
10/28/2011
10:50:50 PM
Ultra Rare 4.8%
People Person
Play with 10 different co-op partners for at least 15 minutes each.
10/28/2011
6:22:42 PM
Very Rare 7.0%
Together in the light
Complete 5 quests in a single co-op game with the same partners.
10/28/2011
5:32:16 PM
Rare 17.3%
Originality
Play in a co-op team of 4 different playable characters.
10/28/2011
4:11:50 PM
Very Rare 6.3%
Swing them sticks
Kill 150 enemies using Analog Fighting controls.
10/26/2011
3:03:09 AM
Ultra Rare 3.1%
A taste of everything
Kill a zombie with 10 different melee weapons.
10/26/2011
12:33:20 AM
Common 56.6%