The Blood and Wine expansion for The Witcher 3 Wild Hunt introduces players to the vibrant yet dangerous ducal region of Toussaint. Among its most dramatic late-game main missions is the high-stakes military assault known as Capture the Castle. This comprehensive walkthrough will guide you through the preparation steps, intense combat encounters, and major narrative revelations required to successfully complete this quest.

Preparing for the Midnight Assault

Before initiating the attack on Dun Tynne Castle, Geralt of Rivia must meet with Captain Damien de la Tour near the designated mill. This meeting serves as a critical point of no return for several optional secondary activities within the expansion, meaning you should finish pending side stories beforehand. It is highly recommended to brew superior vampire oils, restock your potions, and repair your armor sets before speaking to the captain.

Once you confirm your readiness to the captain, a cinematic sequence triggers to set the stage for the nighttime infiltration. Your military allies will launch a loud diversionary attack at the front gates to draw the bulk of the defensive forces away. This strategic opening allows Geralt to slip through a quiet side path unnoticed and begin his assault on the lower tier.

Fighting Through the Dun Tynne Outskirts

As soon as you gain control of the witcher, you will face immediate resistance from a large contingent of rogue mercenaries. Utilize the Quen sign frequently to shield yourself from incoming crossbow bolts while using fast attacks to slice through the frontline guards. The tight pathways of the estate outskirts require careful positioning to avoid getting trapped against the stone walls.

Clear the immediate courtyard of all hostile targets and push forward toward the inner structures of the castle grounds. You will eventually encounter the noble Roderick, who is stationed on a carriage and defended by elite bodyguards. Focus your heavy attacks on his surrounding defenders first before incapacitating the leader to advance your journal objective.

Confronting Roderick and Moving Forward

After defeating the defensive squad, a mandatory dialogue sequence with the injured Roderick will automatically initiate. He is severely wounded from the skirmish and offers critical information regarding the true location of Syanna within the complex. You are presented with a minor choice to either assist his injuries or leave him to suffer on the carriage.

Regardless of your ethical decision here, Roderick reveals that the political situation is far more complicated than the duchy initially assumed. He explains that the remaining castle forces are on absolute high alert and expecting further resistance in the upper courtyards. Armed with this vital knowledge, Geralt must press onward into the heart of Dun Tynne to locate his target.

Reaching the Inner Keep and the Climax

The final stretch of the castle assault forces you to fight through a series of elite knights guarding the upper terrace area. Keep your steel sword coated with Hanged Man's Venom to maximize your damage output against these armored human opponents. Clearing this final wave of defenders grants you access to the main residential quarters where the captives are held.

Upon entering the inner keep structures, a pivotal cinematic unfolds that completely shifts the narrative trajectory of the expansion. Geralt finally reunites with Syanna and Dettlaff, uncovering the dark secrets behind the recent vampire murders in Beauclair. This dramatic conclusion immediately completes the mission and transitions directly into the next major story arc.