Complete Chapter 2 on any difficulty setting

Complete Chapter 1 on any difficulty setting

Finish the game in Normal Mode

Kill 50 enemies with the M4

Kill three enemies with one explosion

Kill 30 enemies with the MP40

Kill 20 enemies by shooting from the hip (without aiming with the L1 button)

Kill 100 enemies with headshots

Kill five enemies with a brutal combo

Kill 30 enemies with headshots

Find five treasures

Find one treasure

Commit suicide in a Warhawk by running into your own Aerial Mine.