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

Kill 20 Enemies with Headshots

Kill 5 Enemies in a Row with Headshots

Find 1 Treasure

Kill 50 Enemies with the Dragon Sniper

Kill 100 Enemies with Headshots

Kill 50 Enemies with the 92FS-9mm

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 75 Enemies in a Row Without Dying

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Easy Without Changing the Difficulty

Kill 75 Enemies in a Row Without Dying

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