Defeat 10 Enemies with Thrown-Back Grenades

Kill 30 Enemies with the M9

Kill 30 Enemies with the Mag 5

Kill 30 Enemies with the SAS-12

Kill 30 Enemies with the Tau Sniper

Defeat 20 Enemies While Swimming

Kill 10 Enemies with Grenades While Hanging

Kill 20 Enemies by Shooting from the Hip (without aiming)

Kill 5 Riot Shield Enemies by Running Over Their Shield

Find 40 Treasures

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 10 Enemies in a Row, Alternating Hand-to-Hand Combat and Gunfire

Kill 100 Enemies with Headshots