The Path of Eos
Through the doors, a few enemies throw themselves at Kratos with reckless abandon. Make short work of them and proceed into the vast cavern. Pluck a Gorgon Eye from the chest on the immediate left and proceed past the save point, using it if you want. The caverns tend to be very dark, but it's a good thing Kratos ripped Helios' head clean off--it really comes in handy. To switch between Helios' Head and the Bow of Apollo in the future, all you have to do is hold L2 as you normally would and press Triangle and Square, respectively, to whip out them out.
The cavern's inhabitants continue to harass Kratos as he explores its innards, but it's nothing that he hasn't encountered before. Paint the cavern wall with Helios' bright light to reveal the hidden path. This path winds to the edge of a wide chasm, with a long chain extending across. Before grabbing the chain, climb down to a small ledge below to find a Phoenix Feather!
Crossing the chain, Kratos continues through the dark caverns and soon comes to a small gap. Light up the area to see and float across. After the cut-scene, agitate the resting Harpy using the Bow, and hitch a ride across. Running along the path, Kratos encounters a new enemy, a scythe-wielding Wraith. These guys seem intimidating, but you can abuse the Hyperion Ram move so much that they become sickeningly easy to handle. Repeatedly Hyperion Ram the duo to make short work of them. In addition, if they ever fling their scythes, simply block to deflect them back harmlessly.
Continue up the path to find some chests and a wooden scaffold. Dismantle this and shine Helios' light on the wall behind it to unveil a hidden alcove with a hidden chest! Inside is a Gorgon Eye. Progress across the bridge comes to a complete halt when the area gets overrun with Wraiths, and unreachable archers rain down arrows. Use the oil cans to cause some initial damage to the Wraiths and dispatch the archers in quick succession. Take care of the Wraiths the same way you did the first time--by using Hyperion Ram over and over again. It's cheap, but hey, it works!
When passage across the bridge is allowed once again, search the corner for a well-hidden chest containing a Phoenix Feather. Free the Orbs from their chests and be on your way. Save your game and explore the small room for red Orbs. There's a hidden alcove that is waiting to be revealed by Helios' light. Afterwards, ride the draft up and partake in a kind of mini-game that involves steering Kratos away from obstructions. He takes damage for crashing into obstructions, so guide him away beforehand.
Kratos lands on a platform and must make his way to the top despite everything working against him. The falling debris and the crumbling walkways--he must persevere! After two grapple points, Kratos must ascend and wind his way around to a walkway. Whip out the Helios' Head to uncover a hidden chest with a Phoenix Feather. Then, swing across two more grapple points and partake in another dodging mini-game. This time, flaming debris and girders abound! Make sure Kratos is in relatively good health standing when he finishes his flight.
