The Assault on Xiapi mission in chapter 4 of Dynasty Warriors Origins requires you to conquer the Xiapi castle with Cao Cao.

Dynasty Warriors Origins, the latest addition to Koei Tecmo’s Dynasty Warriors franchise, features compelling narration perfectly blended with large-scale war mechanics. As you progress deeper into this musou-style game, the narration becomes more intense, with one of the arcs focusing on the Xiapi castle.
Assault on Xiapi is a mid-chapter mission of Wei arc of chapter 4, which requires you to take control of the castle. This guide provides a complete walkthrough of the Assault on Xiapi mission in Dynasty Warriors Origins.
Related: Dynasty Warriors Origins Suppression of Jing Province (Chapter 2) Walkthrough
How To Unlock Assault on Xiapi in Dynasty Warriors Origins
Once you complete the Battle of Xiapi mission in chapter 4, you can proceed with the Assault on Xiapi mission. In this mission, you join forces with Cao Cao and battle Liu Bei’s forces to take control of the Xiapi castle.
Guan Yu, the formidable foe, serves as the boss of the battle. Take control of the castle while preventing Cao Cao from fleeing the battle to complete the mission successfully. Assault on Xiapi mission goes through the following stages.
- Battle at the Floodgate
- Defeat Liu Bei and Zhang Fei
- Defeat Guan Yu

How To Complete Assault on Xiapi in Dynasty Warriors Origins
Battle at the Floodgate
Starting northeast of the battlefield, try to clear all the surrounding bases. Clear the way through the northeast checkpoints and head to the Floodgate. Defeating the generals Chen Gui, Wen Chou, and Shen Pei boosts the morale of your forces, adding advantage to your rally. Meanwhile, Guan Yu, on the other side, threatens your forces by destroying them while guarding the castle entrance.
Defeat Liu Bei and Zhang Fei
Once most of Liu Bei’s forces and enemy bases near the Floodgate are eliminated, Liu Bei and Zhang Fei advance to Cao Cao’s position in the northwest. Meanwhile, Guan Yu will move to the Floodgate to defend the location from Cao Cao’s army.
Defeat Liu Bei and Zhang Fei by assisting Cao Cao. This makes Liu Bei and Zhang Fei flee from the battleground, reducing their courage significantly. As a result, all remaining forces from both sides advance to the castle entrance.
Defeat Guan Yu

After retreating to the castle entrance, Guan Yu will regroup with his remaining allies. Defeating the majority of his allies forces him to retreat inside the castle. Chase him through the castle and confront him to trigger the final boss battle.
Guan Yu is extremely strong and agile. Use your tactics, companion swapping technique, and special musou attacks to effectively deal with him, while avoiding his devastating special attacks. Once you defeat Guan Yu, you will seize control of the castle and conclude the mission.
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