Kill 75 Enemies in a Row Without Dying

Kill 50 Enemies by Melee-Attacking from Behind

Kill 20 Enemies with Gunfire While Hanging

Kill 10 Enemies in a Row with a Single Punch After Weakening Them with Gunfire

Beat 'Chapter 5 - The Fortress' in less than 10 minutes

Kill 5 Enemies with a Single Punch After Weakening Them with Gunfire

Finish the Game on Hard Without Changing the Difficulty

Find all Treasures and the Strange Relic

Kill 30 Enemies with the M79

Kill 30 Enemies with the MP40

Find 50 Treasures

Find 40 Treasures

Defeat 250 Enemies with Headshots