Kill 50 enemies with the Moss - 12

Kill 10 enemies by aiming while hanging from a ledge

Find 50 treasures

Finish the game in Easy Mode

Kill 30 enemies with the Dragon Sniper

Kill 50 enemies in a row without dying

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 the Wes - 44

Kill 100 enemies with headshots

Kill 50 enemies with the AK-47