Kill 10 enemies with grenades by aiming while hanging from a ledge

Finish the game in Normal Mode

Find all 60 treasures

Kill 30 enemies with the MP40

Kill three enemies with one explosion

Find 50 treasures

Find 45 treasures

Kill 20 enemies melee-attacking from behind

Kill 30 enemies with the Dragon Sniper

Kill 20 enemies with the Desert - 5

Kill 30 enemies with the M79

Find 30 treasures

Kill 20 enemies with the Wes - 44