Obtain both perks for a weapon.

Defeat 10 minigun heavy armor units.

Destroy your first helicopter.

Purchase a pistol.

Purchase a Sub-Machine Gun.

Defeat 10 named enemies.

Equip your first modified part.

Equip your first perk.

Eliminate your first LAV.

Use a grenade in a mission.

Defeat your first launcher heavy armor unit.

Defeat your first minigun heavy armor unit.

Eliminate your first Boss.