Use Auto Injector 50 Times

Complete 'Welcome To Bad Company' on hard

Complete Campaign Mode on any difficulty

Detonate multiple Magnum rounds to kill 2+ enemies at once, 5 times

Get a kill with every weapon in your arsenal

Kill 5 drivers without destroying their vehicle

Use the Atomizer secondary fire to kill 30 enemies

Collect 50% of the journals

Upgrade 5 weapons in Campaign Mode

Kill 20 enemies with environmental objects

Kill 25 enemies firing the Auger through an object

Kill 5 Longlegs in mid-jump