Completed the Humming Encyclopedia

Kill 30 enemies with the MP40

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

Find 30 treasures

Kill 20 enemies with the Desert - 5

Kill 20 enemies with a brutal combo

Kill 20 enemies with the Wes - 44

Kill 30 enemies with headshots

Find 15 treasures

Kill 50 enemies with the AK-47

Find 10 treasures

Kill five enemies with a brutal combo

Find one treasure