Complete one of the missions you receive in the mission log.

Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.

Throw back a grenade and defeat two enemies at once

Successfully counter all of a Brute’s damage-giving attacks

Defeat 30 enemies in a row with your side arm

Defeat 20 enemies with gunfire by aiming while hanging

Find 20 treasures

Defeat 20 enemies with headshots

Defeat 50 enemies with hand-to-hand combat

Defeat five enemies in a row with headshots

Make five enemies drop their grenade by shooting them