Kill 20 enemies with the Wes - 44

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

Kill 50 enemies with the Micro - 9mm

Kill three enemies with one explosion

Kill 50 enemies with the AK-47

Kill 100 enemies with headshots

Kill 50 enemies with the PM - 9mm

Kill 30 enemies with headshots

Find five treasures

Kill five enemies in a row with headshots

You have won the game on Hard difficulty.

Found all Lorestones.

Completed the House of Sorrows storyline quests.