11. The Thief
Follow the path into the where you will encounter a Banshee, these aren't all that hard to kill. Use a spell and some melee to kill the demons she summons, when you kill those the Banshee will be vulnerable to repeated slashing. As you progress there are a few groups of Hollow Men you'll have to kill, then you will be told that you've made it halfway through the marshes.
Next you will fight an Elder Hollow Man, he isn't too difficult, kill him, take the silver key in the area, and move on to where you'll face another Banshee. Shortly after facing the second Banshee you will meet face to face with a Troll, this Troll is no different than the others you've killed before it, take the treasure next to it. Once you make it to the town you can explore around or go meet Reaver right away. You might as well just talk to him right away though. Reaver will ask you to gain more renown before he will consider your offer, so, just as before, complete some sidequests or do some jobs to spike your renown.
Talk to Reaver after you've reached a worthy reputation, he'll send you to deliver a Dark Seal in Wraithmarsh, on your deliver job you will encounter various creatures, the first being a Banshee. Follow the path and unlock the door into the Shadow Court. Once inside make your way down, there will be a hidden door to your left with a chest behind it. Keep going, you can hear Elizabeth crying. You will come to a room with a gate where you will have to fight several waves of Shadow's, these are just weaker versions of monsters you've alreay faced time and time again.
After you've defeated them vailt down and speak to Elizabeth, she needs help. The Shadow Judges will appear and you'll have a choice to make, if you give the Seal the them and age you will gain purity, if you give it to Elizabeth you will gain corruption. Whatever happens, walk back and there will be a chest in your path.
Now you'll have to go back to Reaver, and much like The Spire quest, you'll be a while so take care of everything you need to first.
When you're ready, speak to Reaver and escape down the tunnel with him. You'll have to fight some of Lucien's men, Reaver will help you by using his pistol. After you're done in the first area you'll run into more of Lucien's men in a small room with a water floor. Proceed and take care of the men on the tracks, above you there are exploding barrels that you can shoot to kill all of Lucien's riflemen. Follow the tracks to the next area to get up top. You don't have to worry about the enemies below if you don't like a ranged fight, just run across into the next room and they will follow you there and you can kill them with your sword. Make your way to Smuggler's Beach.
You'll meet Garth and Hammer on the back, and all four heroes will be united for the first time. When Reaver thinks he is on his way out a Great Shard will arrive, this is the kind of badass thing that will spawn enemies at your feet and shoot at you! The only way to defeat it is to wait until it opens up and shoot a spell at it, watch out for enemies on the beach though, especially Spire Shards. Keep cycling between killing Lucien's men on the beach and running up into ranging and focussing on the Shard, I found a level five Blade spell really useful for this. Watch out for a red beam concentrating on you, this is a major powerful attack, immediately vacate your position when you see this. For defeating the Great Shared you get Shard Shard (trophy) and 10,000 renown points.
Now you will be transported to Bower Lake, you and the others will assemble to construct a great weapon, one powerful enough to take down Lucien. Unfortunately you are interrupted by Lucien and his men.
Lord Lucien has killed your family, and now he is going to kill you. You'll then come to find yourself, a young boy with your big sister on a farm. There are a few things you can do but soon enough Rose will want to go to bed. Rose's diary is next to her bed, a good thing to check into if you grabbed her diary from the beginning of the game.
Go to bed and you will hear some music playing, you can either follow the sound or go back to bed, if you sleep again the day will restart. Go through the charred path and pickup the music box, your characters life with spiral before your eyes. Rose will say something to do, and you will be sent to the Tattered Spire.
You walk up and see Lucien there, hold the music box against him. Reaver will kill him and Theresa will appear and tells that that the Spire has power to grant you one wish, you can choose between:
Sacrifice: Restores life to all that were lost in the building of the Spire.
Love: Brings all of your loved ones back to life, including your dog.
Wealth: Gain 1,000,000 gold and 300 evil points.