Before I can access and protect the final repository, I must take pensieve relics I’ve been collecting to Ollivander and have him craft me a wand. (I was pretty excited to get a special wand until the Keepers explained its only purpose is to get me through the vault door.)
As I exit the shop, Victor Rookwood corners me. He thinks we should work together against Ranrok to keep the power in the hands of wizards. I refuse. He then says, “Children should be seen and not heard.” My face indicates that I remember those exact words were used by the person who cursed Anne. (It wasn’t a goblin.) A henchman apparates in and grabs me. I’m taken to a poacher camp. It’s a fight to the death, including Rookwood’s attempt to overpower me with Avada Kedavra.
Natty will be pleased to know that Rookwood is gone. When Sebastian hears the phrase Rookwood uttered, he’ll at least know who harmed his sister.
In the Map Chamber the Keepers review the lessons they wanted me to learn from each of their memories. Rackham stresses that the power in the final repository should be neither destroyed nor controlled. I’m only to act as they did and keep it safe.
(Why shouldn’t it be destroyed? Is it because living beings were violated? Out of respect for them I should keep the sphere intact? Will something horrible happen if all that pain is released on the world? I would’ve liked a clearer explanation.)
The glowy map evaporates, revealing a staircase down to the cavern. Here I and Fig go. It’s the final fight.
The goblins have already broken in by the time we get there. (I mean, honestly. All of these security measures have proven useless.)
Goblins and trolls abound. Luckily, Fig updated the professors before we went underground. Now they apparate in, wands ready, just when we need help.

Fig and I run for the door that leads to the sphere. Here’s the guard. My special wand changes their attack to an unlock. (Again, really? This was a big deal to undergo every trial to gather the means to forge this wand. And Ranrok just walks in!)
At the sphere, Fig asks if I will keep the power as is or release it. Will I keep it a secret forever, or only a while until I trust others?
Ultimately, my answers don’t matter. Ranrok enters and blasts it to bits, taking all the power into himself. He wields Miriam’s wand and turns himself into a dragon.
(Interestingly, Lodgok mentioned earlier that goblins believe that the maker of a product is the owner. Money exchanged or theft doesn’t matter. The property belongs to the creator forever. This is the argument Ranrok uses to defend his claim to the sphere. Bragbor built it, therefore it belongs to the goblins.)
For someone who’s only level 25 (the dragon is level 40) I face a brutal fight with annoying mechanics. When it’s done and Ranrok is dead, the red power he accumulated floats free, attacking the cavern’s columns. Fig joins me, helping to hold back the rocks, and tells me to reconstruct the sphere to contain the power.

And then he’s dying. Is it depletion from expending that much magical energy? It’s unclear. Maybe he was hit by a falling rock. My character places Miriam’s wand on his chest and he passes.
(I don’t think anyone likes this. It feels cheap, like the game makers wanted an emotional moment and decided to fridge Fig. The subtext is: we killed off an old guy who would’ve died soon anyway; he gets to reunite with his dead wife, so we actually did him a favor.)
Or, if I choose to tell Fig I’ll use the sphere, either in an attempt to do good or just for selfish power reasons, I don’t get a Fig death scene. He’s simply not there. As I bottle up the sphere’s magic I take a big sniff and my eyes flash red. And then I go about the rest of the story with no change, no sign that I ingested evil.
Afterwards, everyone gathers in the Great Hall for Fig’s memorial and a toast.
And that’s it. Spring comes to Hogwarts. The game informs me that I’ve completed the quests. I can run around indefinitely, topping off side missions if I want. The story, though, is over.