Once that hollow is defeated, you can enter the doorway and head left to find another hollow. There are more located around the area, so be careful. In the center of the room, you can drop or roll to a central gate and hop to the ledge. You can take out the hollow there and follow the path to find a Twinkling Titanite on a corpse. From here, you can drop down to the center where you'll be attacked by a Ringed Knight with a Ringed Knight Spear. Once it's defeated, you'll find a corpse in the middle alongside a pillar with a Shriveling Stone.
Exit that room through the doorway and up the short stairs, then cross over the large stairs to the far end to find a path with hollows and a Titanite Chunk at the end of the path on a corpse. Turn around and head staright, and you'll find a large staircase with tons of Harald Legions that patrol the stairs. You can take out the hollows and head left across the narrow bridge to find a corpse with 2 Mossfruit. Head through the entrance on the left, and you'll find a Ringed Knight among a field of lavender flowers. Defeat it, then head up to be invaded by the Seeker of the Spurned, who will come out of an alley in the corner. Once he's defeated, he'll drop the Wolf Ring +3. You can also find a Black Witch Set on a corpse at the end of the alley. Heading back to where we came from, try to take out the Harald Legions one at a time by doing plunging attacks against them.
Once the Harald Legions are dealt with, head up the stairs and at the end you'll find a large church with a door. Interact with the door to speak with someone on the other side, a woman named Shira. She'll ask for you to defeat Midir, a large dragon. If you agree, she'll give you the Sacred Chime of Fillianore. Head back down the stairs and take out the hollows on the left, and if you continue there will be another 2+ hollows, one of which tosses lightning spears. Once you've dealt with them, you'll find a corpse in the nookn the corpse with 2 Mossfruits on it. Across the opposite way, you'll find a passageway with more hollows, with another hollow dropping down from the wall on the left before the exit. There will be another Ringed Knight with a spear outside here, and there will be a Ringed Knight Spear on the corpse in the corner. Continuing down the path, you'll find more hollows and then another moss covered bridge. Drop down to the large stairs and kill any remaining Harald Legions if you have yet to kill them, then pick up the Large Soul of a Crestfallen Knight off the corpse.
Now you'll be in a large swamp area, and there's plenty of things to do here. First, head left and you'll find a corpse with a Titanite Chunk. You'll find more hollows here, guarding a Soul of a Crestfallen Knight. There will also be a ladder in the area, at the top of which you can find an NPC Locust Preacher that you might have talked to before. Then, up the stairs you'll find a Crystal Lizard that drops a Twinkling Titanite immediately to your left, which will likely fall off the balcony to the large stairs below. Across the bridge past the Crystal Lizard, you'll find 2 Ringed Knights and then a room where you can find Lapp again. He'll ask you for the location of the Purging Monument, which he will continue asking in this location until you find it. You will also find the Covetous Gold Serpent Ring +3. Once back at the top of the stairs above the ladder, go right instead, and you'll find a stone path leading to the tower ahead. You'll be invaded by Silver Knight ledo, who drops Ledo's Great Hammer once you kill him. You'll also find a Titanite Chunk in the area, and right outside the tower where you entered from, you can drop down a series of ledges for a Havel's Ring +3.
Heading back to the base of the ladder, turn around and head in the opposite direction and you'll find a White Preacher Head in the corner. Head back to the base of the stairs and walk straight ahead to see a group of Locusts that scatter. You'll then find a Dark Gem on a corpse, and to your right you'll find a large Locust with spikes. Kill it, and then you'll find a corpse with 4 Prism Stones. In the next room, you'll find a Bonfire. Head back out and then head straight across to find another large Locust enemy procteding a Twinkling Titanite. Then, stay along the left wall of the swamp, head up the hill, and you'll find a hollow to your right protecting a White Birch Bow. Across from that will be a Titanite Chunk on another corpse. Head back down the hill, and to the left you'll find a tree with corpses you can root for 3 Young White Branches. Head back to the swamp and go foward, hanging left, and head into the structure to find a Church Guardian Shiv on a corpse. Exit the structure and at the end of the sawmp, you'll find an Iron Dragonslayer who will drop the Iron Dragonslayer set. Keep following the left shore, and you'll find 2 Titanic Scales on 2 corpses. Keep circling around and you'll find a Titanite Chunk. Roaming the swamp will be another summoner, kill him, and then kill the large Locusts around the area.
On an island in the swamp you'll find a Titanite Chunk, as well as a Large Soul of a Weary Warrior. Circle around the island, head up to the hill, and you'll find a Ringed Knight Straight Sword and the NPC Locust. Head back down to the swamp and around the crumbled ruin, you'll find the Preacher's Right Arm being guarded by hidden Locusts. Then, go to the large building that is partially submerged and loot the Soul of the Weary Warrior. Then, go up the building and fight 3 Ringed Knights. Then step onto the roof, head to the other side, and drop down onto the ground. To the right, you'll find another Ringed Knight and a corpse with the Black Witch Veil.
Head onto the structure and go up and find a Twinkling Titanite. From there, look left and you'll see a large enemy up ahead. Drop down, head right, and you'll find a path into the building. Go through the doorway and you'll unlock the shortcut into the bonfire room from before. In that room, you can also find an engraving saying, "Show Your Humanity".
In order to trigger this secret, you need to be a Humanity in disguise by using the Chameleon spell or a Young White Branch in the swamp area. Once you go up the ladder past the secret, drop down below and you'll find 2 Ringed Knights in the area along with a summoner. Try and kill off the Ringed Knights before attacking the Summoner. Once you're done with them, go down the ladder up ahead and take a right to fight a lightning spear hollow, then loot the body for the Dragonhead Shield. Go back to the latter, cross the bridge, loot the Large Soul of a Crestfallen Knight, and then you will find the Purging Monument that Lapp wanted you to find. Head back to Lapps room, tell him of the monument, and then go back to the bonfire room.
Make your way back through the shortcut, follow the narrow path down, and pick up the Titanite Scale off the corpse. You'll find another Ringed Knight up ahead, defeat it, then find the Dragonhead Greatshield on the corpse. Head back up, and cross the stone bridge. Once you do, Midir the dragon will breath fire down the cliffside, so be careful. You can run up quickly and into the tunnel on the right side of the mountain. There will be an enemy in here, as well as a Soul of a Weary Warrior. Inside the tunnel on a corpse to the right side of the edge will be a corpse with 2 Titanite Scales. Time the dragon's breath, then rush out and loot the corpses. The first one will have Rubbish which you don't really need, and on the left side will be a ledge that you can drop down to loot 2 Titanite Scales. Keep going, kill the hollow up ahead, duck into the entrance of the next tunnel, and then once the dragon breaths fire once agian, go outside and pick up the Large Soul of a Weary Warrior to the left.
Once back inside the tunnel, head up the stairs to find a Crystal Lizard, but you will be unable to reach it as you will fall down some broken stairs. You'll fall down to a lower level of stairs and be invaded by a Moaning Knight. Head up the stairs and you'll find 2 skeletons, as well as a Lightning Gem. Step through the room and head up the stairs and you'll find 2 Skeletons and the Moaning Knight. once he's dead, you'll earn the Blindfold Mask and then find a corpse with a Simple Gem past the stairs near him. Near the entrance, you'll find Lapp if you told him about the Purging Monument. A cutscene will play out and some other stuff will happen, and you can go back to where you were before. Now you can avoid the crumbling stairs and drop from level to level. Then you'll reach a corpse with a Blessed Gem and reach a room with a Mimic afterwards, which holds a Ring of the Evil Eye +3. Go up to the next level, enter the room, and go up and left to find some more skeleton enemies. Keep going and you'll find the Crystal Lizard again, which you can kill this time for sure. Then, you'll find another Bonfire shortly after. If you completed Lapp's cuscene, you can drop down to get Lapp's Set from the room right of the entrance to the area.
If you head out the area, though, you'll fight the dragon Midir while he is up on this large bridge. The best way to fight him is to stay close to his arms near the edge of the cliff. Most of his attacks will miss, but eventually he will start going berserk and you'll need to get as far away from him as possible. Once he's finished going berserk, attack him again and he'll eventually drop and leave himself defensless. Attack him again and he'll fall into the abyss. Go past the bridge and you'll find a Titanite Scale on a corpse. Entering the building, go up the stairs on the left and kill the Crystal Lizard. To the left of the base of the stairs you'll find three illusory walls, the first one with a hollow, the second with a Soul item, and the third with the miracle Lightning Arrow. Go back up the stairs and you'll find a statue of Gwyn with an item in it. You'll find a room with a pressure plate that you can activate for an elevator you can go up to open a gate that unlocks a shortcut to the bonfire from earlier. As you go back down from the elevator, look for a side doorway you can enter. There will be a corpse on the ember, and then you can attack one of the statues that will open a hidden door leading to a long ladder that leads to a Filianore's Spear Ornament, the Antiquated Plain Garb, the Violet Wrappings, and the path to fight Midir defeat him entirely. You can find details for the whole fight here.
Step through the doorway to the stairs and down the next flight, then hop down the hole in the floor and land on Gwyn's statue. You can then pick up the Chloranthy Ring +3 from Gwyn's hand. Then, head outside and you'll find 5 Budding Green Blossoms on a corpse on the left side. There will also be a Ringed Knight with Ringed Knight Paired Greatswords in front of a giant statue. Defeat him and you will obtain his weapons. The statue itself can actually be prayed to as to join the Spears of the Church Covenant. There will also be a Ritual Spear Fragment behind the statue. Go up the stairs and drop down to the left to find a corpse with 2 Twinkling Titanites. Once you go up the stairs, you can talk with Judicator Argo and then face the second boss of the DLC: Halflight, Spear of the Church.
