so you can get there, start off atFalkretand go west, heading towards the mountains.
If you have found theDark Brotherhood Sanctuaryalready, it would be even better as a starting point.
After reaching the western mountains, search for a cave entrance.
Soon it will turn out that it’s not an ordinary ghost, butGallus- the one whoMercer Freymurdered.
The man will be very happy to hear thatKarliahis still alive and you are in possession of theSkeleton Key.
Apart fromGallus, every ghost you come across will be very aggressive.
That way you will activate the optional objectiveRetrieve Nystrom’s Journal.
New optional objective: Retrieve Nystrom’s Journal
Turn left ofGallusand go towards the cave wall.
Eventually you should see a skeleton - search it to find theNystrom’s Journalbetween the bones.
Unfortunately they aren’t very useful, being puzzles themselves.
Beside Nystrom you will also find his money-bag and a quite powerfulDwarven Battle Axe.
Take whatever you need - the dead don’t need equipment anymore.
Go pastGallusand take the stairs up the corridor.
As you cross the iron gate, be ready for a fight - twoNightingale Sentinelsawait you.
After dealing with the enemies, look inside the room upstairs to find aSoul Gem.
Don’t approach the light sources - it’s deadly.
The only way to stay alive is staying in the shadows at all times.
you should probably follow the narrow streams of darkness, manoeuvring between the light.
Going out of the dark room, you will stand opposite to a Nocturnal statue.
Beside her feet you will find some riches and a bandit corpse.
pull them to activate a secret mechanism which will bring up the gate behind the goddess.
After dealing with the enemies, head to theTwilight Sepulcher Inner Sanctum.
Head across the lit room and jump inside the well.
Therefore you should reach a room in which you have to return the ancient artifact.
As you do it,Nocturnalherself will appear before you.
Afterwards you should speak toKarliah, who will surprisingly appear in the room.
From now you will become an Agent of Nocturnal - chosen by the goddess herself.
Choose wisely, as you could change your mind only after 24 hours have passed.
Nightingale Subterfuge (half moon): once a day you’re free to become invisible while sneaking.
Crouch to reactivate it.
Before leaving theTwilight Sepulcher Inner Sanctum, you will be able to encounterGallusandKarliahreuniting.
At this point, the main storyline of the Thieves Guild comes to an end.
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