Jack of One Trade
Awarded when a player unlocks all skills in a skill tree.
7/3/2008
2:11:05 AM
Rare 19.9%
Excessive Force - Kill a lone Helghast with the WASP secondary fire
Used the secondary fire function of the WASP launcher to kill a single Helghast
7/2/2008
2:46:48 PM
Rare 34.2%
Deadhead
Get 150 zombie headshots in a single game. (Map Pack 2 only)
7/2/2008
1:15:24 PM
Ultra Rare 3.3%
Flee Flawlessly
Complete any Gauntlet Challenge without taking any damage
7/1/2008
7:02:31 AM
Rare 38.4%
Boom Stick
Use the upgraded Rossmore secondary fire to set 6 enemies on fire at once
6/30/2008
3:40:53 PM
Rare 10.7%
No Witnesses - Destroy all dropships on the Highway
Destroyed all dropships on the Highway
6/30/2008
5:58:14 AM
Ultra Rare 2.8%
Magnificent, Isn't It?
Complete Alien Campaign on Nightmare difficulty setting
6/30/2008
12:15:44 AM
Ultra Rare 1.5%
Ding
Obtain a reputation level of 1 in Career Mode. Not unlockable by Co-riders.
6/29/2008
11:32:38 AM
Rare 43.9%
