Wilhelm's Nightmare
Knock 10 enemies off of the scaffolding during the helicopter fly-in in Chapter 7: Golden Gate
7/17/2011
1:49:43 AM
Very Rare 5.1%
Stairway to Heaven
From the front door of the church, make it to the crow’s nest in 240 seconds in Chapter 5: Heartland
7/17/2011
12:18:04 AM
Rare 38.3%
Let 'em Burn
Don't kill any of the enemies that are on fire in Chapter 3: Fire Sale
7/16/2011
10:36:53 PM
Rare 39.5%
Good Game
Complete a Competitive Multiplayer game of every gametype.
5/16/2011
7:41:45 PM
Very Rare 9.2%
Expert Tactician
Complete a Story Campaign mission using only teammates to eliminate enemies.
4/29/2011
5:44:32 PM
Ultra Rare 4.3%
Executioner
"Animus" - Complete the Story Campaign by choosing to take Gorman's life.
4/27/2011
3:46:34 PM
Rare 15.7%
Combat Medic
Execute a total of 25 teammate revives during your career.
4/27/2011
3:36:48 PM
Very Rare 8.6%