Finish the Game on Crushing Without Changing the Difficulty

Kill 50 Enemies with the M32-Hammer

Kill 5 Enemies in a Row with Headshots

Kill 50 Enemies with the M4

Kill 30 Enemies with the Moss-12

Kill 100 Enemies with Headshots

Kill 20 Enemies with Gunfire While Hanging

Kill 30 Enemies with the Wes-44

Kill 30 Enemies with Mk-NDI Grenades

Defeat 20 Enemies with Hand-to-Hand Combat

Get ending 1.

Complete the game on Normal.