Kill 30 enemies with the MP40

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

Kill 20 enemies with the Desert - 5

Find 30 treasures

Kill 20 enemies with Mk-NDI grenades

Kill 100 enemies with headshots

Kill five enemies in a row with headshots

Kill 30 enemies with headshots

Kill 50 enemies in a row without dying

Kill 50 enemies with the PM - 9mm

Find five treasures

Access the alternative ending (collect all orbs)

Defeat a Chupacabra using only Slam