Hotter than Hell
Complete the final day of the "7 Days of Hell" unlockable mode
12/19/2009
3:03:13 AM
Rare 11.6%
Anniversary of the Dead
Complete the Final Day, in either Single or Multiplayer, and finish the game
12/15/2009
4:12:21 AM
Rare 22.8%
Gun Shop
Kill at least one zombie with each weapon type in any game mode
12/15/2009
2:02:06 AM
Rare 40.4%
More the Merrier
Kill 10 or more zombies at the same time in any game mode
12/15/2009
12:46:28 AM
Common 81.1%
Interior Decorator
Kill 25 zombies in any game mode using environmental hazards
12/15/2009
12:43:39 AM
Common 80.1%
Tour of the City
Complete each arena at least once in the same game in any game mode
12/15/2009
12:41:07 AM
Common 74.4%
Gas Powered
Complete an entire arena, getting every kill with the Chainsaw
12/15/2009
12:32:35 AM
Common 63.0%
Environmental Awareness
Kill a zombie using an environmental hazard in any game mode
12/15/2009
12:25:02 AM
Common 91.8%
