Play Sector Control

Campaign: 10 melee kills

Campaign: finish Zero Dark Thirty

Campaign: destroy 1000 objects

Campaign: find 15 collectable weapons

Campaign: 50 kills with light machine guns

Campaign: finish Heavy Metal

Campaign: finish Snowblind

Take out a Japanese soldier lying in wait in the grass.

Burn an enemy out of a tree with the flamethrower in 'Hard Landing'.

Campaign: 50 kills with shotguns

Campaign: destroy 1 satellite uplink

Campaign: find 5 collectable weapons