Hammerfall is a Quest in Divinity: Original Sin II. The final battle draws near; will you be able to solve the puzzles of Lucian's tomb, or die trying?
- Pass the Trial of Blood.
- Pass the Crypt of Lucian.
- Pass the Line of Anguish.
This main quest is acquired once you reach Act IV, the Hunt for Dallis.
Speak to Malady, and she will remind you that your purpose here in Arx is to kill Dallis.She suggests that you start searching for her amongst the local Divine Order.
The harbour has been overwhelmed by the Voidwoken; defeat them so you can explore the Lord Dread - Dallis's ship. Interacting with the Lord Dread will tell you that Dallis is older than it, despite it having lived as an Ancestor Tree and an elf prior to its current form. Don't forget to loot the chest for a powerful unique amulet for mages.
Travel through the bridge to reach the city of Arx. You will need to defeat some Voidwoken on the bridge, starting the quest, "Battle at the Gates".
Inside Arx, you will learn from some paladins that Dallis can be found inside the cathedral.
Once you have the knowledge on how to traverse the traps made by Lucian from Lord Arhu and the amulet and scroll from the Toyseller, you may proceed into the cathedral. Remember to finish all your side quests and companion quests before proceeding. You will gain 96,950 Exploration XP upon approaching the cathedral.
Head forwards, towards the Path of Blood, where a Hopeful Pilgrim will run ahead of you and attempt it. Obviously, he will be struck dead, and you can then pass. Pass on forwards and you will earn 134,750 Exploration XP. As you approach the statue, don't bother talking with it; it poses a near impossible challenge for slim payoff. Instead, to the left of the statue, there is a switch as shown in the picture below. Put the Source Amulet acquired from the Toyseller in it, then push the button. The amulet will need to be completely full of source (you may equip and use Source Vampirism to fill it). If done correctly, you will automatically read the Scroll of Atonement and a hatch will be revealed.
Once you enter the hatch, you will come to the Crypt of Lucian and immediately earn 80,850XP. There will be a waypoint and puzzle waiting just ahead.
To solve it, first, you need to create some blood on the iron grate, as shown in the picture below:
Cast Blood Rain on this grate, then cast Bless on it. If you do not have Blood Rain, you can attack yourself for some blood.
The second step is to align the pipes. Interact with the altar and pick the 2nd option to align the pipes. There are multiple ways to achieve this; here's one of the solutions:
Once you have aligned the pipes correctly, cast Bless on the blood surrounding the iron grate, then quickly touch the altar and pick the first option to activate it. The puzzle will be solved and the coffin of Lucian will be moved, revealing a secret hatch. Enter it.
You will come to a place called "Line of Anguish". Interacting with the door ahead will give you a warning. Be careful; when you enter this death room, you will meet with a bunch of source puppets who will interact with the levers and annoy the crap out of you, inflicting annoying statuses such as the cow status and the like. They can be permanently killed by stripping their magic armor and then casting Source Vampirism on them, and you can also use area effect spells to destroy many of them in 1 go. When they are all dead, pull the five levers bearing the initials that spell "POWER". In this case, Potency-Order-Wisdom-Empathy-Righteousness; the sequence does not matter. You can also use one character to turn invisible and activate the levers while your other characters are in battle with the puppets; this will kill all the puppets. The puppets give no XP, although each one killed has a chance of dropping puppet beads (which can be used to make Apotheosis scrolls) and source orbs. The picture below shows the location of the levers:
After activating all the levers, the barriers will be cleared. It is time for the final battle. Make sure you are ready before you enter the real Crypt of Lucian, because after this point, you can no longer go back. Ensure you have finished all the quests, memorized your best skills, and equipped your best gear, because the end draws close.
This marks the end of Act IV. Divinity awaits.