THE PALACE OF HADES
You will be locked inside the Place of Hades. Proceed to the main door and face more hounds and sentries. Get the green chest when you’re done and enter the main hall of the palace
Hades will greet you. After the introduction use the Save spot and take note of the Wheel switch that you will be moving to advance. Go to the right side of the main hall to find an object that is movable and a green chest. Move that object near the save spot. Get ready to face some Harpies.
Pull down the Wheel switch. As soon as the door opens up on the second floor, put the object that you can move to right beside the Wheel.
Go back to the middle of the main hall and climb. Approach the door that you just opened and get ready to fight hounds and two Minotaurs. Kick the hounds on the Minotaur to do some damage. Use the Blades of Exile and watch out for the Minotaur running towards you.
Go up and you will be in the second floor of the main hall. Before doing something, go to the right end of the hallway to get the two chests, when you’re finished, go to the left and up to the ladder. There you will find two red chests and a big one that contains another Phoenix Feather. By now, your magic meter should’ve been increased.
Back to the second floor’s main hall; start off by turning the crank until a coffin pops out in front of the big Hades’ statue. You will then find that it’s Persephone, the wife of Hades that you killed in Chains of Olympus.
What you need to do to face Hades is to go where the Podium is in the middle, and grab the coffin to smash the chest of Hades’ Statue. Since two of arms are blocking the chest, a ladder will drop down on both sides on the same floor.
Start off by going to the left ladder. Face more sentries and Harpies. Go up, and to your right, you will find a chest and an elevator.
Take that elevator down and you will be back near the save point. Remember that object we used to open the door in the second floor? Take it and bring it up.
Go back to the main hall of the second floor. Turn the crank around until the shackles open up. Quickly go up where the elevator is located and pull the Wheel switch. You will then shackle Hades’ left arm. Use the object you got from the first floor to block the wheel from going back.
Turn the crank one more time and proceed to the ladder to your right. It will lead you the Wheel switch again where the right hand will be shackled.
With the chest free to smash, use Persephone’s coffin to enter the place where Hades hides.