FFXIV Deep Dungeon Guide: Palace of the Dead to Eureka Orthos

Deep dungeons are FFXIV's take on a roguelike. You walk in, your real level and gear get shelved, and you start fresh with a special set of weapons and armor that only works inside. From there it's floor after floor of rooms full of mobs, traps, and loot chests, with a boss waiting every ten floors. There are three of these dungeons, and once you clear floor 50 of the first one, the other two unlock.

They share a lot of the same rules, but each one has its own tricks and its own scary floors. The good news is that the basics carry over, so once you understand how one works, the next two click pretty fast.

How Deep Dungeon Floors and Aggro Work

Every deep dungeon is cut into floor sets of ten. You drop in at the top of a set and fight down to the boss on the tenth floor, and beating that boss is what saves your run. Each floor is a little maze of rooms. Somewhere in there is the Cairn of Passage, which is your exit down to the next floor. It starts dark. You light it up by killing enemies, and once it glows, everyone in the party has to stand in the circle to move on. It won't let you leave mid-fight either, so anything you've pulled has to die first.

There's a second cairn called the Cairn of Return, and that one is your safety net for revives. Same deal: it needs kills to charge. Parties with no raise spells really want this lit before things go sideways. If you're solo, it's mostly just there in case the worst happens.

Then there's the aggro. Enemies in deep dungeons don't all wake up the same way, and reading the icons saves a ton of grief. There are four kinds you'll run into.

Sight aggro is the common one. The mob has a vision cone in front of it, and if you step into that cone, it comes for you. The fix is simple. Go around it, or pull it back into a room you've already cleared. Sound aggro is sneakier. These mobs react to noise, which in practice means running near them. Walk past instead of sprinting and they usually leave you alone, so toggle off Sprint when you're threading through a packed room. Proximity aggro is the rude one. There's no cone and no noise trigger. You get close, it wakes up, full stop. The fourth is magic aggro. These mobs ignore you until you cast a spell nearby, then they pile on. Healers and casters tend to learn this one the hard way.

The practical takeaway is to hug the walls, walk instead of sprint past sound mobs, and pull sight mobs back into cleared space so a stray patrol doesn't add on you.

Traps are the other thing scattered across the rooms, and they're invisible unless you pop a Sight pomander (or protomander, same idea). At most one spawns per room, and never in the room you start in. A few types show up in all three dungeons. Enfeebling traps slap on Enervation, which cuts your damage dealt by 20% and bumps damage taken by 30% for a minute, and you can't Esuna it off. Impeding traps give you Pacify and Silence for 30 seconds, and that one you can cleanse. Landmines hit everything in range for about 80% of current HP, and since it scales off current HP it can't actually kill you on its own. Luring traps are the nasty ones. They spawn three random enemies from the floor and point them all at whoever tripped it. That's your cue to reach for a Witching pomander and turn the whole pack into chickens.

The walls trick matters here too. Steer along the edge of the room and you'll dodge most traps by default. When in doubt, burn a Sight to see what's on the floor before you go running through it.

Palace of the Dead Early Floor Strategy

Palace of the Dead is the first deep dungeon and the gateway to the other two. It caps you at level 60, runs 200 floors deep, and you pick it up from the Wood Wailer Expeditionary Captain in Quarrymill, South Shroud, after the level 17 quest The House That Death Built.

You start at level 1, no matter what your real job level is, and you climb back up by killing things. Floors 1 through 50 are the story portion, and they're the friendliest part of any deep dungeon. A patch a while back (7.31) made this stretch a lot gentler on purpose, since hitting floor 50 is what unlocks everything else. Silver coffers now hand out at least +5 aetherpool a pop, bosses give +10 and are guaranteed to upgrade you, and sustaining potions drop off enemies so you're not sweating for heals.

So on the early sets, play greedy. You outscale the mobs fast, which means open every chest you can and build up your pomander bank while it's cheap. This is also where you learn the mimic trick. Chests can be mimics in disguise, and which tier of chest hides them depends on the floor set. Bronze chests on floors 1 through 30, silver on 31 through 40, and gold from 41 on up. A mimic bites you with the Accursed Pox, a damage-over-time debuff that runs a full ten minutes. Kill mimics fast before the cast lands, and keep a Pomander of Purity on hand to wipe the pox if one sneaks through.

Your single goal on a first run is floor 50. Don't get fancy. Grab the aetherpool, stock the pomanders, and clear the sets. Once you've done that, the other two dungeons open up and you also get access to floors 51 through 60, which are the sweet spot for grinding aetherpool and levels. People farm 51 through 60 over and over because the enemies there are dense enough to level you fast without being brutal. If you want to push toward 99 aetherpool, that's the loop.

One thing to watch as you go lower is that patrolling mobs start roaming the rooms to catch you off guard. Early on it's manageable, but the deeper floors have mobs whose auto-attacks hit like trucks, so you stop being able to just stand and trade. Keep a Pomander of Raising in your back pocket for the sets where a single mistake ends the run. Raising auto-revives the first person to die, and you can't even find them past floor 181, so treat it as a late-run lifeline. Save it for the back half.

Heaven-on-High Blue Magic Tips

Heaven-on-High is the second deep dungeon, capped at level 70, 100 floors, from the Stormblood era. You unlock it in the Ruby Sea after the quest Knocking on Heaven's Door, and the gate is level 61 plus a cleared floor 50 of Palace of the Dead. Same structure as PotD, but it leans harder into dangerous auto-attacks on the high floors.

So why bring a limited job into a place like this? Because Blue Mage is basically a one-person party. BLU's whole kit is built around doing a bit of everything, and in a place where you're alone with no group to cover your gaps, that versatility is gold. The core setup is a handful of spells. Basic Instinct is the engine. When you're solo, it cranks your damage and healing way up, so a lone BLU hits and sustains like a much beefier job. Aetherial Mimicry lets you copy a role, and you'll usually mimic a tank for the survivability. Mighty Guard cuts the damage you take. White Wind is a big area heal that scales off your current HP, so the more health you stack, the harder it heals. Add Ram's Voice to freeze groups and Ultravibration to instantly kill anything that's frozen, and you've got crowd control, burst, healing, and mitigation in one bars.

The opening ritual is the same every run. Pop Basic Instinct and Mighty Guard at the start, mimic your role, then play aggressive because you out-heal most incoming damage. Because BLU can patch itself up, control packs, and even self-raise through certain spell setups, you're effectively covering tank, healer, and DPS at once. That's why BLU solo clears of HoH are a real thing and not just a party trick.

A couple HoH-specific notes. The dungeon hands out magicite, which transforms you into big summons for a burst of power. Think of them as panic buttons for messy floors or for skipping a room you'd rather not fight. Then there's the Hall of Fallacies, a special floor type that litters the place with fake beacon lights, and a few of those beacons are traps in disguise. A Pomander of Safety wipes the fakes clean, so pop one before you go trusting any glowing light on that floor. And mark this one down. Floor 99 always rolls three enchantments at once, which is brutal if you're not ready, so hold a Serenity pomander in reserve for that floor specifically. Serenity strips every enchantment off the floor, and on 99 you'll really want it.

One limit to know going in. BLU's level cap sits at 80, and Eureka Orthos requires level 81 to enter. So BLU can run PotD and HoH all day, but the third dungeon is off-limits to it. Bring a real job for that one.

Eureka Orthos Floor Sets and Traps

Eureka Orthos is the third deep dungeon, capped at level 90, 100 floors, from Endwalker. You grab it from Koh Rabntah in Mor Dhona after the level 81 unlock quest, and the gates are level 81, a finished Endwalker story, and that same floor 50 PotD clear.

The pomanders are back, but here they're called protomanders, and they come with a few EO-only additions. Lethargy slows every enemy on the floor for ten minutes, which is a great panic button since EO mobs love attacks with late or missing telegraphs and the slow buys you time to react. Storms chops every enemy's HP down to single digits, so you round up a few, pop it, and finish the lot with one area attack. Dread turns you into a dreadnaught with Rotosmash, which one-shots most non-boss enemies, basically a beefed-up version of PotD's Rage.

EO also has two systems the other dungeons don't. The first is demiclones. Silver coffers sometimes drop tomestones, and you feed those into a generator to summon a temporary ally that fights beside you. Three flavors. Unei is a healer that patches you up and throws a shield on you. Doga is a DPS that often out-damages actual players. The Onion Knight is the rare all-rounder that hits hard and heals. They despawn if you die or leave the floor, so don't get cocky with one active.

The second is Dread Beasts. Every so often you load into a floor and a system message warns you one has spawned. There are three of them. Demi-Cochma, Lamia Queen, and Meracydian Clone. They hit hard and have a big health pool, so the default move is to avoid them. Beat one, though, and the whole party gets a 30-minute buff. Demi-Cochma gives you 10% damage reduction, Lamia Queen hands out HP regeneration, and Meracydian Clone adds 10% damage dealt. The easy kill is to drop a Storms on the floor and mop up. Fair warning, dread beasts laugh at knockback, so Rotosmash won't one-shot them.

The big design shift in EO is how the enemies fight. Palace of the Dead and Heaven-on-High tend to kill you with raw auto-attack damage on the deep floors, so a lot of your defense is just stacking aetherpool and mitigation. EO flips that. Auto-attacks are comparatively weak, but the enemies throw out late-telegraphed or flat-out untelegraphed area attacks, and past floor 31, eating one of those is usually lethal. The bosses are more involved too, more like modern trial and raid mechanics than the old deep dungeon punch-ups. The lesson is simple. Respect the telegraphs. Mitigation won't save you from a one-shot AoE the way it saves you from a heavy auto-attack.

EO adds one trap the older dungeons don't have, the Owlet trap. Trip it and you turn into a little owlet for 20 seconds, which cuts your max HP in half and locks out every action, including opening chests. Getting hit with that next to a pack is a bad time. The same trap-avoidance habits from the other dungeons apply here. Hug the walls, Sight before you rush, and clear the floor of traps with Safety if the layout looks mean. Floors 1 through 30 are the story sets. From 31 on it's challenge content, and like the other dungeons you need a fixed party with zero KOs to push past 30.

Gear Progression and Pomander Priorities

Inside a deep dungeon, your real gear doesn't matter at all. The only numbers that count are your aetherpool arm and armor ratings, and each one climbs to a max of +99. Arm is your damage, armor is your defense, and they're the single biggest lever on whether you survive the deep floors.

You build them two ways. Silver coffers have a chance to raise your aetherpool when you open them, and bosses bump it up when you beat them. Since that 7.31 patch, silver coffers give at least +5 each and bosses hand over +10, with boss upgrades guaranteed. Here's the catch. You can't just farm the easy low floors to max out. The success rate on a silver coffer drops as the gap between the coffer's floor and your current aetherpool grows. Grind floors 1 through 10 forever and the coffers start doing nothing. The fix is to farm the middle sets, the 51 through 60 band in PotD or the equivalent ranges in the others, where the floor is high enough to keep upgrading you.

Sustaining potions drop off enemies now too, so melee jobs without their own heals aren't left dry. Keep a few on the bar for the sets where you can't afford to stop and wait for HP.

Now the pomander priorities, which is where a lot of runs are won or lost. You can hold up to three of each, and they're shared across the party, so spending them well is the real skill. The bread and butter is Strength and Steel used as a pair. Strength bumps your damage and healing by 30% for eight minutes, and Steel cuts damage taken by 40% for the same stretch. Pop them together on a tough floor and you're suddenly a lot tankier and a lot meaner. If you're using Steel, you almost always want Strength running too, so you get your kills in before the buff fades.

Safety and Sight are your navigation tools. Sight reveals the whole floor map and every hidden trap, which is how you find the exit fast and plan around landmines. Safety just deletes every trap on the floor. Use Sight to scout, and Safety to sweep before a messy pull.

Raising is your late-run insurance. It auto-revives the first party member to die, and since it can't spawn on the deepest floors, treat it as something to carry into the back half of a climb. Witching is the panic button. The moment a Luring trap dumps three mobs on you or you accidentally body-pull something nasty, Witching turns them all into frogs and chickens for 30 seconds while you sort the mess out.

Serenity strips every enchantment off the current floor. Keep one in reserve for floors with brutal enchantment combos, and absolutely save one for Heaven-on-High floor 99. Intuition reveals the hidden Accursed Hoard treasure on the floor, and the effect lingers until you find one, so you don't need to re-cast it. The play is to hold it at two stacks and pop it around floor seven of a set if you still haven't found a hoard, since going three floors without one is pretty rare.

Affluence, Flight, and Alteration all bend the next floor in your favor. Affluence adds about 50% more chests to the next floor, Flight halves the enemy count, and Alteration turns one room's enemies into easy mimics or mandragoras. Use Affluence and Flight together when you're running low on pomanders and want a fat, quiet floor to restock. Just don't stack Flight with Alteration, since Flight halves the very enemies Alteration would convert.

Finally, the nukes. Palace of the Dead has Rage, Lust, and Resolution, Heaven-on-High leans on its magicite, and Eureka Orthos has Dread and Storms. These clear a floor or wreck a boss in a hurry. Spend them when a floor is genuinely too spicy to fight straight through, or to set up a clean run at the next boss.

The Accursed Hoard itself is worth the trouble. Every piece you dig up with Intuition gets appraised by an NPC outside the dungeon, and the sacks can hold mounts, minions, and other rare drops. A clean run that keeps Intuition up can walk out with a pile of loot you'd never see from a normal duty. That's the real payoff for pacing your pomanders well all the way down.