Killed 100 enemies with Wolf.

Reached level 5.

Activate a Tweak

Kill 50 Enemies with the 92FS-9mm

Find 40 Treasures

Kill 100 Enemies with Headshots

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

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 50 Enemies with the FAL

Kill 5 Enemies in a Row with Headshots

Finish the Game on Easy Without Changing the Difficulty

Find 40 Treasures

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