Hop down off the bridge. In the area below there are 3 roman numerals: I, II, and III. Below each numeral is a triangle that can be turned by walking up to it. Past the III find a room with a pool. Across the pool is a button, over which are three triangles showing the proper alignment for the roman numerals.

So, return to each of the numerals and turn the triangles as shown in the room with the pool: I to 12:00, II to 3:00, and III to 6:00.

Return to the room with the pool and step on the floor plate, releasing the floating barrels (kudos to Raven for this bit of creative genius!). Hop across the barrels and hit the button, opening an archway to the left.

Swim through the archway and up some stairs to the left. Go through the doorway on the opposite side of the room and keep following the stairs up until you come to a 2-way intersection. Go into the room on the right. There should be a pool with a platform in the center in the middle of the room.

Dive into the pool and take the underwater passage to the right. Swim up to the room with the Bo Peep staff and a button on the wall. Hit the button (do you ever not hit a button?) to get a Mars prize.

Open the door, go through, and follow the hall all the way to the end to score a bunch of Glyphs. Return to the room with the pool in the center, and go through the exit on the opposite wall. Go right into the room with stairs and a medusa.

On the upper right is a window you need to jump up to, leading to a room with the Crown. You can make this jump 2 ways: (1) by hopping up on the fountain to the right (2) by climbing up the stairs on the left and jumping across. Both can be a little tricky and may take a couple of tries.

Grab the Crown of Kings. Go through the door and return to the door (incorrectly) labeled The Hall of Heroes. Enter and it will actually take you to The Reflecting Pool.

Return to the room with the stone bridge over the pool. Dive into the pool and take the underwater passage beneath the bridge. Climb up out of the water, take the lift up, and hit the button on the left. This will lower the bridge before you. Jump down, go straight and then right, then right again up some stairs. Follow the hall until you come to the newly lowered bridge. Cross it and follow the hall. Notice 2 pedestals, one on the left and one on the right. Place the Staff and Crown on the pedestals to open the door ahead.

Enter the door to The Temple of Mars, the god of war in ancient Rome.

Follow the hall until you come to a large open area. Go through the door to the left, down the steps and into a room with lightning surrounding a Tome of Power. Run through the lightning and across the floor plate. This will lower a lift. Take it up to a catwalk. Hit the button on the opposite wall. Go down the hall to the left to an alcove overlooking the swinging blades. Hit the button.

Go back across to the catwalk, and through the opposite hall, to a room with a Skull Wizard Lord. Defeat him and collect the Sunstone from the altar.

Return to the outside area and take the door opposite you. Follow the stairs down to a large room with stairs leading up and a catwalk overhead. Take the stairs all the way up and hit the button on the wall, opening to doors on the opposite wall.

Go through the door on the left to collect all your Mars prizes.

Go back through and take the door on the right. Go up some stairs on the right, then right again to a room with a Skull Wizard Lord. Defeat him and collect the Shadowstone.

Go back out of the room and up to the alcove on the right. Hit the button to open a path past the blades. Jump down to the hall with the blades. Follow the wall to the left past them.

Go through the doorway to a balcony overlooking a courtyard with a statue of Mars. Jump down and take the passage under the balcony to another Skull Wizard Lord. Defeat him and collect the Voidstone.

Return to the courtyard with the statue of Mars. Take the hall to the right or left of the statue to a second courtyard with 3 pedestals in the center. Place the Sunstone, Shadowstone, and Voidstone on the pedestals to open the center stone.

Jump down to vanquish the mightiest of Eidolon's generals, War.