The fifth Domain caught me off guard before I even got to the fighting. I lost my save file for my high-level character a while back, so I’m sitting at level 62, and the moment I load into the AC Shadows Red Moon Domain, the game flat out tells me the minimum enemy level is 70. That red text is not subtle. Assassinate abilities barely scratch enemies that far above you, so if you’re walking into the Red Moon Domain underleveled like I was, here’s everything I learned getting through it and beating Eamon Hathaway at the end.

Domains only unlocked for everyone in Title Update 1.1.11, which Ubisoft shipped on June 16, 2026 as the final content update for the game, and the mode doesn’t even open up until your character hits level 30. So if you’re newer to this system, don’t panic if it feels unfamiliar — most of us are still figuring it out too.

Why the Red Moon Domain Walkthrough Starts With a Level Wall

The first thing you’ll notice in this Red Moon Domain walkthrough is that your usual tricks stop working. My Assassinate skills were doing next to nothing against level 70 enemies, and at level 62 that gap is brutal. The only clean kill I could land was shoving enemies off ledges into the abyss, and you obviously can’t do that to an entire camp. So I backed out, spent time leveling my character up properly, and came back once the numbers weren’t fighting me anymore. Once you’re close to the challenge level, the Domain stops feeling unfair and starts feeling like a normal fight again.

While I was leveling, I also learned you can reroll which Domain you get on a fresh generation. It costs MODcoins to do it, but that’s how you steer toward a map that suits your build instead of getting stuck with one you hate. There are five Domain maps in total, and you can also adjust which difficulty modifiers you’re willing to deal with before you commit to a run.

Picking the Right Naoe Build for the Red Moon Domain

I generated the Red Moon Domain on purpose because I hadn’t run it yet, and the build that got me through it is the same Tidal Wave and Eviscerate setup I leaned on for the Broken Sky Domain’s wave-clearing fights. I open with Tidal Wave to mark a few enemies at once, follow up with a couple of basic attacks while they’re vulnerable, and close with Eviscerate. A Bloodshade katana paired with an engraving that refunds Adrenaline on hit keeps both skills cycling fast enough that you’re rarely standing around waiting on cooldowns.

I put this build together back in 2025 when the game first launched, and it still holds up. A few item descriptions have been reworded since then, but the actual bonuses work exactly the way they always did — the old text was just misleading. If you want the full breakdown of why each piece matters, I’ve got the complete build linked in the video and the comments, along with a top-right link if you’re watching along.

Surviving the Health Drain Without Panicking

This is the part of the Red Moon Domain that looks scary on paper. You lose 1.5% of your max health every single second, and normal health regeneration is switched off entirely. The first time you see that timer ticking, it feels like a death sentence. It isn’t. When your health bar hits zero here, your character doesn’t die — you just can’t absorb any more damage until you top back up. You can keep moving, keep fighting, keep playing.

That’s where Restock Stations come in. Find one before a hard section and it fully restores your health on the spot, so you can walk into the next fight at full strength. Don’t overthink the drain between stations either — once you’re moving toward the next objective, let the timer do its thing and focus on the enemies actually in front of you.

Clearing the Domain Daisho on the Way to the Boss

Once you’re past the level wall, the regular enemies and the Domain Daisho scattered around the Red Moon Domain go down fast. Nothing about this section is confusing — clear the samurai blocking your path, and once the last one drops, you’ve got a short walk to the final battle. The same crowd-control instincts that work against the Daisho here carry over from the build breakdown in our guide on handling groups of enemies in Domains, so if multiple Daisho gang up on you at once, lean on the same spacing and skill rotation.

The route afterward is completely linear. Yellow markers point the way, but honestly you don’t even need them — the path is laid out so it’s obvious where to jump and which direction to head next. Don’t worry about your health bar on this stretch. The moment the boss fight actually starts, you get a full heal, so just focus on getting there.

How to Win the AC Shadows Red Moon Domain Eamon Hathaway Boss Fight

Eamon Hathaway shows up again at the end of the fifth Domain, and he’s the same Black Cross Templar who’s been giving players trouble since the Second Domain encounter and the Shipbreaker Domain fight. I went in expecting a long combo string and lost focus for a second, which cost me a chunk of health early. The fix was simple: stop being reactive and get aggressive instead.

My rotation was Tidal Wave into a few basic strikes into Eviscerate, but I noticed Hathaway dodges Eviscerate constantly when it follows a plain basic attack in that order. So I adjusted: Tidal Wave first, a couple of basic hits, then retreat. When he closes the distance, I hit him with Eviscerate immediately, then back off again if Tidal Wave isn’t ready yet. Done right, you’re interrupting his attacks so often it looks like he’s barely moving. Hesitate too long between hits, though, and he turns aggressive fast, so don’t give him the opening.

The opening stretch of the fight is the slow part, since you’re working through his yellow armor bar. Once that’s gone, the fight ends quickly. There’s no spirit enemy or extra complication in this version of the fight, so you can keep your eyes locked on Hathaway the whole time. The Red Moon Domain’s hit-to-heal mechanic means every clean strike refills your health bar, so if you stay aggressive and keep landing hits, you’re rarely in danger by the back half of the fight.

What Clearing the Red Moon Domain Actually Gets You

It’s worth knowing what you’re grinding toward, because the rewards on offer here aren’t small. Beating Eamon Hathaway and clearing a Domain pays out MODcoins, and you spend those at MOD’s shop on gear you genuinely can’t get anywhere else in the game. Weapons run 5,000 MODcoins, armor and headgear sit at 4,000 each, and trinkets or amulets cost 3,000. If you’d rather buff your own runs instead of buying gear outright, the Exploit Tree sells augments priced anywhere from 750 to 4,000 MODcoins, and those apply to both Naoe and Yasuke.

The higher Gateway Challenge Levels hand out gear you flat out can’t earn any other way. Reach Challenge Level 6 and you unlock the Assassin Tomahawk, Challenge Level 8 gets you Excalibur, and pushing through all 10 Gateway Challenge Levels rewards the Golden Bo. None of it shows up in the in-game store or the exchange — it’s purely a badge for players willing to keep climbing through Domains like the Red Moon Domain. That alone made the level 70 grind feel worth it once I saw what was waiting on the other side.

FAQ: AC Shadows Red Moon Domain Walkthrough

What level do I need to be for the Red Moon Domain?
The Domain flags level 70 as the minimum, and going in underleveled makes your Assassinate skills nearly useless against the enemies inside.

Does the health drain in the Red Moon Domain kill you?
No. You lose 1.5% of your health every second with regeneration disabled, but hitting zero just stops you from taking more damage — it doesn’t end the run.

Can I heal during the Red Moon Domain?
Restock Stations fully restore your health before tough sections, and the final boss arena heals you completely the moment the fight starts.

What’s the best build for Eamon Hathaway in this fight?
A Bloodshade katana with Tidal Wave and Eviscerate, supported by an Adrenaline-refund engraving, keeps both skills cycling fast enough to lock him into a constant interrupt loop.

Can I choose which Domain map I get?
You can reroll a Domain generation for MODcoins until you land on a map you like out of the five available, and you can also adjust the difficulty modifiers before starting.

Once I’ve cleared all 10 Gateway Challenge Levels, I’m planning to come back and run this AC Shadows Red Moon Domain Eamon Hathaway boss fight again just to see if I can clean it up further. The next Domain jumps straight to a level 80 requirement, so it’s back to grinding levels before I can touch it. For more build breakdowns while you wait on that grind, check out our other Domain guides on ingametor.com.