The trick to clearing Domain 6, the Broken Sky, is finding one ability and committing to it completely. If you know how to defeat Momochi Sandayu in Assassin’s Creed Shadows using Tidal Wave on a continuous loop, you can wear this boss down without giving him a moment to breathe. That is the short version. Let me walk you through everything from the opening modifier to the final hit.

Broken Sky Domain Modifiers: One Bonus, Two Hard Restrictions

Before you step into the Broken Sky, it helps to know exactly what conditions you are walking into. The bonus is genuinely useful: abilities recharge extremely quickly. This one perk shapes the entire strategy for the Domain, and you will be leaning on it from start to finish. The first restriction is that only Naoe can complete this Domain. That is fine, since Naoe is who I use in Domains anyway. The second restriction is called Static Shock, and that one is the real challenge here.

Static Shock deals continuous damage to you whenever you stop moving. It is not a light inconvenience. The moment you stand still, even for a second, health starts draining. If Static Shock reduces your health to zero, you do not die outright, but you continue the run with a minimal health bar for everything that follows. Going into the Momochi Sandayu boss fight at near-zero health is an extremely uncomfortable place to be. So the number one rule in this Domain is simple: never stop.

Worth mentioning as well that Domain automatically sets its own difficulty level. Do not expect enemies to drop as quickly as they do in open-world play. They hit harder and take more punishment here, which is why engaging in extended fights is almost never a good idea.

Eliminating the Four Domain Dashios: Assassinate and Keep Running

The first stage of the Broken Sky Domain is finding and eliminating four Domain Dashios scattered around the area. With Static Shock active, you cannot stop to clear rooms or engage groups of enemies. Every second standing still costs you health, and the enemies here are tough enough that a prolonged fight almost always ends badly. If you want to check how to optimize your ability setup for these chaotic multi-enemy situations before jumping in, our guide on the best build for clearing groups of Domain enemies covers the essentials.

My approach for the Dashio stage is to either assassinate the target and immediately run, or find a position where I can push an enemy off a height. Both tactics get rid of a target quickly without trapping you in a drawn-out fight. Reinforcements keep arriving, and if you get caught fighting two or three enemies at once, new ones will keep showing up. Always be moving. Always be looking for the next Dashio. When you find one, strike fast and go.

I will be honest about this section: it feels chaotic and often maddening. You will run the same routes more than once, lose track of where the remaining Dashios are, and occasionally get turned around entirely. That is just how this Domain plays. Eventually all four are destroyed, and the path to the boss opens up.

How to Defeat Momochi Sandayu in Assassin’s Creed Shadows: The Tidal Wave Loop

This is the part of Domain 6 where things finally get interesting. After multiple Domains facing Eamon Hathaway, including the long grind through the Red Moon Domain, stepping into the arena against Momochi Sandayu genuinely surprised me. He is a different kind of opponent: more mobile, more unpredictable, and equipped with a kusarigama that he swings in wide arcs and uses to fire ranged attacks. He also carries smoke bombs and poisoned projectiles, which he will use to create distance and make tracking him harder.

The strategy for how to defeat Momochi Sandayu in Assassin’s Creed Shadows comes down to a single skill: Tidal Wave. I tested several abilities in this fight, and nothing else delivers the same consistent results. Tidal Wave hits fast, applies a Vulnerable status to anyone it strikes, and with the ability cooldown bonus in this Domain, you can chain it almost continuously. The trick is that you do not aim the ability directly at the boss. Momochi Sandayu moves around constantly, and the first hit of Tidal Wave will often miss because he has shifted to the side. Let it miss. The ability continues on its own, and the next three hits will connect and deal real damage. That sequence is enough to fill one adrenaline bar quickly. The moment the bar is full, do not switch to basic attacks. Immediately activate Tidal Wave again and keep the loop going.

You will notice this is the same ability that cuts through most of the challenge in the Shipbreaker Domain as well. If you have been using Tidal Wave there already, the rhythm here is very similar, just faster and more relentless. Keep your adrenaline stocked, keep the ability cycling, and do not let the loop break unless you absolutely have to dodge out of the way.

Momochi Sandayu at 30% Health: Shadow Enemies and the Ground Wave Attack

The Tidal Wave loop will carry you deep into the fight, but it will not close things out cleanly. When Momochi Sandayu drops to around 30% health, he shifts into a second phase that requires you to adjust. The first thing he does is summon additional shadow enemies into the arena. These shadow enemies disappear quickly if you keep hitting them with Tidal Wave, so the core strategy does not change. What does change is that you need to track their movements carefully. They attack fast and some of them throw objects, so ignoring them entirely while focusing on the boss will get you hurt. I alternate between activating Tidal Wave and running around the arena to create distance and reset the situation when things get too crowded.

When Momochi Sandayu goes invisible, do not stand still trying to find him. Keep running. Use the time to recover your position, dodge anything coming at you, and wait for him to reappear. The moment he does, press back in with Tidal Wave. Also, in this phase, he will occasionally kick you, and unlike most of his other attacks, that kick cannot be parried. Your only answer is to dodge sideways, so watch for it.

The final threat to survive is a magical ground attack. It is similar to attacks you may have seen in the Horizon Rift. Momochi Sandayu strikes the ground and sends waves radiating outward in your direction. Watch for the moment he raises his weapon and hammers the ground, then dodge to the side immediately. The waves travel in a straight line, so a clean lateral dodge takes you out of the path entirely. After the wave passes, you can move straight back in and resume the Tidal Wave cycle.

This is how you defeat Momochi Sandayu in Assassin’s Creed Shadows: patience in the final phase, continuous mobility, and never letting the ability loop collapse under pressure. Keep chipping at the remaining health bar, prioritize the dodge when you see the ground attack coming, and stay disciplined with the adrenaline management.

After the Victory: Remember That Static Shock Is Still Running

Once Momochi Sandayu goes down, the Domain is complete. But Static Shock does not care about your victory. The modifier stays active the moment the fight ends. Run to the exit immediately and do not stop to stand around. Get out, reset, and get ready, because the Domains from here only get more demanding.