Once you’ve made it to the later parts of the game right close to the ending, you’ll come across a quest called Door of Destiny. This is essentially the final quest of the game which is then followed by a fight against the queen of the castle.
The queen will be waiting for you at the Queen’s Chamber. However, you won’t be able to get there right away as the path will be blocked by a massive golden door.
If you’re unsure how to proceed, this guide will show you how to open the castle door to complete the quest.
How to Open the Castle Door Leading to the Queen’s Chamber in Ravenlok
You get the quest by eavesdropping on the two guards who are having a conversation near the prison. One of them will mention pressing four switches right next to the prison entrances.
Shortly after that, you’ll then receive the Door of Destiny quest.
The quest is relatively simple: all you have to do is obtain the Heart, Space, Diamond, and Club cards. You’ll use them later to open the door.
For now, let’s look at how you can get them.
Obtaining the Cards
After receiving the quest, go all the way to the right until you reach the castle hall. Turn to your left to find the switch with a Spade icon on it.
Press the switch and choose Yes when prompted. Once you’re done, go back to the prison.
An ambush event will take place; make sure to take care of the enemy guards that come your way.
After dealing with the guards, you’ll then receive the Spade card.
Same as before, head to the castle hall and activate the switch. This time, you have to activate the one on the right with the Diamond icon.
Go back to the prison once more and deal with the enemies. You’ll then receive the Diamond card afterward.
For the remaining two cards, you have to go back to the castle hall. This time, however, you need to go to the prison entrance on the opposite side.
This is where you’ll find the Heart and Club switches. Just follow the same approach that you did with the previous cards, but make sure to enter the prison to the right this time.
Once you have obtained all four cards, head to the castle door just up ahead of the hall. Interact with it and place a card when prompted to.
You’ll have to repeat it four times in order to place all of the cards in the empty slots. This will then open the castle door right away.
Good luck with the final fight!