Quiet Please!
Turn the sound and music down to 0 in the options menu whilst in the library
1/24/2017
6:53:55 PM
Very Rare 6.1%
Feel the Heat
Kill all 4 tanks on the overpass with the Javelin missile in 'The Bog'.
12/26/2016
4:18:48 AM
Rare 11.0%
Roadkill
Kill 2 enemies by blowing up a car in the single player campaign.
12/26/2016
4:07:37 AM
Rare 25.6%