Light 'em up!
Kill 5 aliens with one shot of Project X (in single player).
1/14/2013
11:45:31 PM
Rare 31.9%
Tank
Take 500 damage without dying on 'Determination' single player mission.
1/14/2013
9:25:12 PM
Rare 28.6%
Grave Robber
Collect 50 items or weapons from human corpses (in single player).
1/13/2013
9:46:59 PM
Rare 43.9%
Recon Unit
Complete any single player level with the waypoints turned off.
1/13/2013
9:19:42 PM
Rare 28.2%
Hardcore
Complete any single player level using only the Blaster and Grenades.
1/13/2013
2:41:37 AM
Rare 26.4%
The Initiated
Complete the prologue in single player on any difficulty level.
1/13/2013
2:41:31 AM
Rare 29.3%
Sunny Side Up?
Kill an alien egg using the melee attack (in single player).
1/13/2013
1:57:31 AM
Rare 46.5%
Survivor
Stay alive for 8 minutes or better on any of the Survivor mode single player levels.
1/13/2013
1:23:05 AM
Rare 25.0%
At Your Mercy
Kill a stunned alien with a Frag Grenade (in single player).
1/12/2013
11:36:47 PM
Rare 32.4%
Frag-master
Use a Frag Grenade to kill 5 aliens at the same time (in single player).
1/12/2013
11:36:41 PM
Rare 32.7%