Dirty Bomb achievements

Earn 5 kills with a headshot

Earn a first kill with a Burst-Fire weapon

Earn a first kill with Sniper Rifles

Complete a secondary objective

Earn a first melee kill

Unlock a Merc

Complete a Mission

Deliver a Unit of health to a team mate

Earn a first kill with a Semi-Automatic weapon

Deliver an ammo clip to a team mate

Earn a first kill with Shotguns

Revive a team mate