Melee Man: Get twenty melee kill. 
Master Of Your Domain: Get 17 kills playing as each class. 
Master Blaster: Kill 50 enemies with grenades, rifle grenades, or explosives. 
Rifleman: Kill 50 enemies with a semi-automatic rifle. 
Infantryman: Kill 50 enemies with a submachine gun. 
Sniper!: Kill 50 enemies with a scoped rifle.