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

Kill 100 Enemies with Headshots

Find 40 Treasures

Kill 30 Enemies with the KAL-7

Defeat 50 Enemies with Hand-to-Hand Combat

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

Kill 20 Enemies with Gunfire While Hanging

Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Easy Without Changing the Difficulty

Kill 30 Enemies with the MP40

Find 20 Treasures

Finish the Game on Hard Without Changing the Difficulty