Destroy 50 Air Support Drones
Get 500 headshots with any weapon
Kill 10 boss characters
Get 250 kills with the minigun
Get 250 kills with the jetpack
Get 5 brutal melee kills as each of the four Combat Roles in co-op
Bank 2500 points as each of the four Combat Roles in co-op
Win 50 co-op games
Get 250 kills with the Marksman's LS70 sniper rifle in co-op
Get 250 kills with the Tactician Turrets in co-op
Get 250 kills with the Assault's Breacher automatic shotgun in co-op
Revive 50 Team mates in co-op
