Throw Back a Grenade and Defeat 2 Enemies at Once

Kill 50 Enemies by Melee-Attacking from Behind

Kill 30 Enemies with the Tau Sniper

Play in the Swimming Pool on the Cruise Ship

Kill 10 Enemies with Grenades While Hanging

Hit 3 Enemies with Fish in the Market

Defeat 20 Enemies by Blind-Firing While in Cover (without aiming)

Kill 100 Enemies with Headshots

Kill 20 Enemies with Gunfire While Hanging

Defeat 20 Enemies with Hand-to-Hand Combat

Defeat 30 Enemies in a Row with Your Side Arm

Kill 20 Enemies with Headshots

Find the Strange Relic