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Some quests inKingdom Come: Deliverance 2are very easy to miss, even if you are paying attention. One such quest is Demons of Trosky, which can be triggered at the Trosky castle. You can initiate this mission by talking to Chamberlain Ulrich right after completing For Whom the Bell Tolls.
As the name might hint, it is pretty complicated, as the Trosky castle is a maze, and you can easily get lost searching for spots to get rid of the so-called demons. Here, we will guide you through all of the objectives of this mission.

How To Start Demons Of Trosky
You can start this mission by simplytalking to Chamberlain Ulrich, who will be marked with a side quest marker. You can just go to him in the dining room nearOtto von Bergow’s chamber. Ask Ulrich if there’s any work around the castle, and he will tell you about the demons.
verify to complete this quest before finishingthe Necessary Evil main mission. While the game tells you it can be done after you have initiatedFor Victory!before talking to Hans Capon, that is not true. You won’t be able to pour the water in front of one of the fireplaces in the Maiden Tower as the door to get inside will get locked.

He will then offer you the chance to take eitherthe Holy or Magic water. It doesn’t matter which you pick, as the quest will progress the same way. After that, your objective will be totalk to three people about the demons.
How To Banish The Devils From The Crone’s Side Of The Castle
First,speak to Manyeta, who will tell you to pour the water in front of thesouthwest part of the castle’s fireplaces.
Go to Bertha (she will be marked on the map) andpour water in front of the fireplace, which can be located onthe right side of the stove. Now, go upstairs and open the door on the left. The second fireplace will be on the left side of the room.
After that, go out and head up. Then, at the front,you will notice a stone staircase. Go up and inside the room on your left. On the right, there is another fireplace. Now, go out andkeep going up until you reach a red door. Open that and take a sharp left; go up the staircase, and the fourth fireplace will be on the right side.
After pouring the water, head up another staircase,take a U-turn, and open the door. The last fireplace is just in the front. Pouring water in front of the last one will complete your first objective.
How To Banish The Devils From The Maiden’s Side Of The Castle
To trigger this objective, talk to Bertha andhead to the other side of the castle. Start from the kitchen,where you talked to Manyeta, and pour the water in front of the fireplace, which is located right next to the stove.
Now go outside the kitchen and head inside from the door to your left.Ascend and enter through the green door; the fireplace will be on the left. Before the fireplace, there is another door, so open it and enter;the third fireplace is on the right.
Now,return to the room with the second fireplaceand enter through the door on your left. Head up the staircase and enter through the door in front of you; another fireplace will be on the right. After pouring the water, go straight and through the door on your right;the last fireplace will be in this dining room.
After pouring the water, you will complete the second objective.
How To Find The Devils According To The Blacksmith’s Directions
Now,talk to Osina(he will be marked on the map), and he will tell you what to do. After talking to him, go out through the gate on your back, take a left, andkeep going straight. Eventually, you will come across a door,open it and reveal the devils.
It turns out that Osina has guided you to the toilets, sogo back and confront him. He will then ask you to visit another location (it will be marked on your map).It is yet again another toilet, so go back to Osina, andhe will ask you to go to another place. Go to the location, and yes, it is another toilet.
You don’t necessarily have to beat Osina for pulling a prank, but given he did that three times, he deserves a few punches to his face.
He was just messing with you, but you can confront Osina and teach him a lesson with your fists. After that, report back to the chamberlain, and he will reward you withone Golden Cup, one Golden Chalice, and 55 Groschen. You will also get survival and vitality experience.