Kill 100 Enemies with Headshots

Find 40 Treasures

Kill 30 Enemies with the KAL-7

Successfully Counter all of a Brute's Damage-Giving Attacks

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 75 Enemies in a Row Without Dying

Find 1 Treasure

Find 20 Treasures

Kill 20 Enemies with Gunfire While Hanging

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat