Hidden Weapon: Large White Hand:

Shortly after your battle with the Empress, and after the long cutscene, you will be in the tomb-like area and have a scene where you have to run from the Dahaka. During this scene, if you are quick, you can find a large white hand to equip as an off-hand weapon. To do this, start the running scene. Run along the wall across the first gap to start it. Continue on past the large hole (Where you run along the wall, then use two poles.) Next is a small hole that you do a normal jump over. Now, instead of going straight through the spot you would roll through (Or right, if you chose,) take a sharp left. There will be a gate, and a weapon rack.Destroy the weapon rack, and the hand will fall to the ground. Pick it up and run, because you're now short for time.