Find 100 Treasures

Defeat 250 Enemies with Headshots

Find 80 treasures

Kill 75 Enemies in a Row Without Dying

Kill 50 Enemies with the M4

Kill 20 Enemies with Gunfire While Hanging

Kill 100 Enemies with Headshots

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 50 Enemies with the FAL

Find 20 Treasures

Kill 5 Enemies in a Row with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Brutal Without Changing the Difficulty