There is a barrel, wooden crate and a sack in the immediate room. Go through the west door and then open the chests at the top of the stairs. Continue west and defeat the Alphas that attack. Head north and open the far left door to find two chests. The next room over has a chest as does the other. Open the east door and go east through another. Defeat the ranged foes that await you. Enter the south area in the previous room. Fight off the Genlock Master Assassin and beware the leghold traps. The room has three wooden crates to check out.
Head south and fight off the two Ogres and Hurlock Emissary. There are six chests and a wooden crate amongst the sides which contain lots of consumable items for the upcoming battle. Head to the Rooftop to reach the final battle.