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

Kill 20 Enemies with Gunfire While Hanging

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Find 20 Treasures

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Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Beat the Last Chapter Without Dying on Normal Difficulty or Harder

Finish the Game on Easy Without Changing the Difficulty

Kill 50 Enemies with the M4

Kill 30 Enemies with the Dragon Sniper

Kill 30 Enemies with the MP40

Find 30 Treasures