Memory of Jeigh
Head to the Cardinal Tower bonfire near the Last Giant in the Forest of Fallen Giants. Climb down the ladder, then head across the small bridge to the left. Continue through the doorway to the right, then immediately to the left. Equip the King's Ring and head through the door here. Light the bonfire in the small room, then interact with the giant statue ahead to enter the Memory of Jeigh.
Go through the mist door and wait for the first fire explosion. You do not have to fight any of the enemies in the immediate area, just keep away from the explosions. At the end of the path is the boss battle against the Giant Lord.
The fight against the Giant Lord is almost identical to the battle against the Last Giant. Stay by its feet, dodge when it attempts to stomp and continue to hack away at its feet until it falls. This strategy avoids all of the Giant Lord's attacks aside from the foot stomp.
After defeating the Giant Lord, then pick up the Old Radiant Lifegem in the corner, and head up the stairs. Pick up the Fire Seed to the right, then drop down and head through the doorway and down the stairs. Interact with the stone giant to the left to obtain the Soul of a Giant, which transports you back to the Forest of Fallen Giants.
Defeat the Royal Sorcerer Navlaan invader again, then head back to the Cardinal Tower bonfire. Head down the ladder and make your way through the next room, then to the right and into the doorway. Go up the stairs and head toward the Pursuer boss. Continue beyond where the boss battle took place and interact with the giant statue to enter the Memory of Orro.
Memory of Orro
Head through the room and up the two flights of stairs. Quickly take down the enemies at the top, then use a Pharros' Lockstone on the face on the wall. Go into the hidden room and open the poison-rigged chest to find three Souls of a Hero. Ignore the face on the wall here, and go back through the doorway and up the next two flights of stairs, then to the left to engage the three enemies in the next area. Be careful as one is manning a crossbow.
Drop down to the bridge on the right to find the Soul of a Brave Warrior, then drop down to the rooftop and head left. Interact with the fallen giant to obtain the Soul of a Giant and be transported back to the Forest of the Fallen Giants. Head back to the Cardinal Tower bonfire, down the ladder, and through the broken wall. Continue to the left, down the next ladder, then head through the doorway to the left and immediately to the right. Interact with the giant statue ahead to enter the Memory of Vammar.
Memory of Vammar
Head down the corridor and approach the door. As soon as you get close, dodge back to avoid the giant's attack. You have a limited amount of time in the memories, so if you can take down the enemies quickly, do so. Otherwise, run past the enemies, through the doorway, and into the next area.
Go to the ladder ahead and to the right to reach the roof, then run across and drop down behind the enemies. Head down the stairs, and to the right to find another ladder. Climb the ladder and go through the doorway to the right, then across the rooftop to find the Soul of a Great Hero and a Bonfire Ascetic.
Turn around and head back through the doorway and down the ladder. Go through the doorway behind you and to the left until you see the stairs. To the left of the stairs is a Rouge Water. Pick up the item, then continue up the stairs to find an Old Radiant Lifegem at the top. Head to the far right corner to find the Soul of a Great Hero and a Torch. Interact with the fallen giant to receive the Soul of a Giant and be transported back to the Forest of Fallen Giants.
Prepare for the Final Battle
Go back to the Cardinal Tower bonfire once again, and travel to the Hidden Chamber bonfire in the Black Gulch. Head down the corridor, then head left in the next open area, taking out the enemies as they spawn, unless you've already cleared all the respawns in the area.
When you reach the area where the first worm-like enemies appear. Drop down to the left to reach the ledge below, then head around the corner and drop down again. Drop down once more, then head into the cave. Take out the two giant enemies in the open area at the end of the cave to receive a Forgotten Key and the Soul of a Giant.
Head into the small room on the far side to find a coffer that holds a Ring of Giants +1, and a Petrified Dragon Bone. Move across the area to find another room. Watch out for the hole in the middle, and break the pots to find four Silver Talisman. Move into the cage in the last room to head to the floor above, then drop down to the area below and head back to the area where you first dropped down.
Use the Forgotten Key to open the door, then speak with Darkdiver Grandahl, the man in the corner, if you wish to join the Pilgrims of Dark covenant, obtain an Abyss Seal, gain access to his shop and the lift. You've now completed your task here. The next and final stop is Drangleic Castle.
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