Kill 10 enemies by aiming while hanging from a ledge

Finish the game in Normal Mode

Find 55 treasures

Kill 20 enemies melee-attacking from behind

Kill 50 enemies with the SAS - 12

Kill 30 enemies with the MP40

Find 50 treasures

Find 45 treasures

Kill 50 enemies with the M4

Find 35 treasures

Kill five enemies in a row with a brutal combo

Kill 20 enemies with the Wes - 44