The Sword Is Broken
Complete 'Hard Landing' on Veteran difficulty. (Solo only)
10/1/2010
4:17:20 PM
Very Rare 5.6%
Deadhead
Get 150 zombie headshots in a single game. (Map Pack 2 only)
9/17/2010
7:58:49 PM
Ultra Rare 3.3%
Get Your Left Foot Wet
Complete a match in Campaign Co-Op mode. (Online co-op only)
4/2/2010
11:08:43 AM
Rare 12.6%
Blue Ribbon
Complete a 4-player Competitive Co-Op match in 1st place. (Online co-op Only)
3/31/2010
2:52:31 PM
Very Rare 5.2%
Get Your Right Foot Wet
Complete a match in Competitive Co-Op mode. (Online co-op only)
3/31/2010
2:52:27 PM
Rare 16.8%
Acquire Waffle Weapons!
Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)
2/27/2010
8:11:16 PM
Very Rare 5.6%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
2/3/2010
4:29:11 PM
Rare 12.6%
40 Knives!
Kill 40 zombies with the bowie knife. (Map Pack 3 only)
1/15/2010
10:59:44 PM
Ultra Rare 2.9%
Pack Addict!
Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)
1/15/2010
10:52:24 PM
Very Rare 5.4%
Perkaholics Anonymous!
Survive until round 20 without buying a single Perk. (Map Pack 3 only)
1/15/2010
9:09:36 PM
Ultra Rare 4.7%
