The Megalithic Domain Challenge Level 10 is the last wall standing between you and the MOD Runner achievement in Assassin’s Creed Shadows, and it looks a lot scarier on paper than it plays in practice. Every enemy in this run is a Guardian, and a modifier makes any Guardian left alone in a one-on-one fight noticeably stronger, which sounds like a nightmare until you realize stealth takes both problems off the table at once. I’ll walk you through clearing the four Corrupted Daisho, surviving the poison kunai spam from the last one, and beating Eamon Hathaway in the arena without the fight ever getting out of hand.

What Makes the Megalithic Domain Challenge Level 10 Different

Domains became part of Assassin’s Creed Shadows in Ubisoft’s final content update for the game, and the mode scales enemies all the way up to level 100 once you’ve unlocked it at level 30. The Megalithic Domain is one of five Domain maps in rotation, and by the time you reach Challenge Level 10 the game stacks on extra modifiers instead of just padding enemy health. Here, every single enemy on the map is a Guardian, and the moment one of them gets isolated from the group, it gets a noticeable strength boost. That sounds rough, but Guardians go down to a stealth assassination just as easily as any regular enemy does, so the “stronger alone” modifier barely matters if you never let them notice you in the first place.

So don’t overthink the setup here. The trial looks intimidating at the start, the same way every Domain does, but the actual movement and combat you’ll be doing is familiar. If you’ve already cleared a few Domains, you already know the loop: clear four Corrupted Daisho scattered around the map, then head into the arena for the boss.

Clearing the Corrupted Daisho in the Megalithic Domain

Throwing weapons are your best friend for the early groups. If you spot a cluster of Guardians patrolling together, throw everything you’ve got, thin the group out, and if it’s still too many, mark one, sprint away to break line of sight, then loop back and pick off the stragglers one at a time. This is basically the same approach we cover in our best build for groups of enemies in AC Shadows Domains, and it holds up just as well here even with the Guardian-only enemy pool.

For the Corrupted Daisho themselves, don’t walk in expecting a fair fight. Open with a stealth assassination first, since it strips out most of their health bar before they even know you’re there, then finish whatever’s left with direct combat. Fighting a Corrupted Daisho at full health from the very first hit is a waste of time and resources, and there’s no reason to do it when a clean assassination does most of the job for you.

The last Corrupted Daisho in the Megalithic Domain is the one that actually tests you. He throws poisoned kunai that are genuinely hard to read and dodge, and once his health drops he starts lobbing poison bombs on top of that, which catches a lot of players off guard the first time. If the direct fight isn’t going your way, back off, reset, and land a second stealth attack instead of trading hits in the open. Without an assassination opener here, this fight can drag on a lot longer than it needs to.

How to Beat Eamon Hathaway in Domain 10

Once all four Daisho are down, the arena opens up and you’re facing Eamon Hathaway as the Megalithic Domain’s final boss. He’s shown up as a Domain boss more than once, and if you’ve already fought him in an earlier run like the one covered in our Broken Sky Domain Tidal Wave build guide, this version of the fight will feel familiar fast.

Guard Breaker is the skill that matters most here. It’s built to shred armor, and you’ll need to land it twice to fully break Eamon Hathaway’s guard before the fight opens up into its second phase. His moveset afterward isn’t complicated. Most of his attacks are slow and telegraphed enough to dodge on reaction, and the one move worth respecting is his sword counter, where he dodges an incoming hit and punishes you for it if your timing is off.

Tidal Wave is where the timing actually matters. Landing it while he’s staggered chips away a solid chunk of his health, but if you try to follow up with Guard Breaker while he’s still mid-dodge, he’ll usually slip the hit and counter you instead. Wait until he stumbles backward and looks dazed before you commit to Guard Breaker again, and it lands clean almost every time. Compared to Momochi Sandayu in the eighth Domain, who I found brutal in our Red Moon Domain Nightmare walkthrough, Eamon Hathaway here is far more forgiving, since his attack patterns barely change between the start of the fight and the end.

If you want to skip the guesswork on gear, a Bloodshade katana paired with Tidal Wave and Eviscerate does most of the heavy lifting on its own. Pair it with an Adrenaline-refund engraving and both skills come back fast enough that you can keep Eamon Hathaway locked in an interrupt loop for most of the fight, which shortens the slow armor-breaking phase considerably. That phase is genuinely the longest part of the whole encounter, so anything that speeds it up is worth the gear swap.

MOD Runner Achievement and Megalithic Domain Rewards

Clearing the Megalithic Domain Challenge Level 10 unlocks the MOD Runner achievement, worth 15 Gamerscore, and it’s the last one tied to the Domains mode. On top of the achievement, finishing a Challenge Level 10 run hands you roughly 12,000 experience and 7,000 MODcoins, which is enough on its own to make a serious dent in the Exploit Tree upgrades sold in MOD’s Shop.

Getting to this point takes real preparation though. Domain enemies scale up to level 100, so if your character isn’t already there, you’re looking at a grind before Challenge Level 10 is even approachable. If you cleared earlier runs like the Whiteout Domain against Yuki no Kata and Marume Nagayoshi, you’re already most of the way to a build that can handle this one too.

Is the Megalithic Domain Worth Grinding to Level 100

Honestly, yes. The Megalithic Domain doesn’t throw anything unfair at you, and once you understand the one-on-one modifier is really just a reason to stay stealthy, the whole run stops feeling like the final boss of the mode and starts feeling like a victory lap. In the game’s fiction, Eamon Hathaway is built from the same Templar operative who chased the Observatory across three continents before dying in Japan, and here he’s rebuilt as a training avatar for the Animus EGO simulations, which is a fun detail if you’re into the lore side of things as much as the combat.

What actually made this challenging wasn’t the Domain itself. Losing a save file with a level 100 character and having to climb all the way back from level 60 was far more painful than anything the Guardians or Eamon Hathaway threw at me. If your character is already leveled and geared, expect the Megalithic Domain to be one of the more approachable Challenge Level 10 runs in the whole rotation.

What I’d genuinely like to see more of across the Domains mode is boss variety. Eamon Hathaway is a reliable encounter, but running into him again as the face of the Megalithic Domain after already beating him in Broken Sky, Red Moon, and Black Tides takes some of the edge off the final challenge. That said, the rest of the mode more than makes up for it. Ten Domains, five maps, and a random spread of modifiers means no two Challenge Level 10 attempts play out quite the same way, and that’s a big part of why the grind back to level 100 still felt worth it in the end.

Megalithic Domain Challenge Level 10 FAQ

What enemies appear in the Megalithic Domain Challenge Level 10? Every enemy on the map is a Guardian, and a modifier makes any Guardian caught alone in a one-on-one fight stronger, so isolating targets with stealth is safer than letting them regroup.

Who is the final boss of the Megalithic Domain? Eamon Hathaway, the same recurring Domain boss who also shows up in the Broken Sky, Red Moon, and Black Tides Domains at different difficulty levels.

What does the MOD Runner achievement require? Completing a Challenge Level 10 Domain run, worth 15 Gamerscore, and it’s tied to reaching the highest difficulty tier the mode offers.

What level do I need for Domain 10? Domain enemies scale up to level 100, so you’ll want your character close to that level with solid gear before attempting Challenge Level 10.

What rewards does the Megalithic Domain give? A full Challenge Level 10 clear pays out around 12,000 experience and 7,000 MODcoins, on top of unlocking the MOD Runner achievement.

Check out our other Assassin’s Creed Shadows Domain guides on ingametor.com if you’re working through the rest of the Challenge Levels, and let us know in the comments whether Eamon Hathaway gave you as little trouble as he gave us.