Hell Eternal Elite

Note: The first blue barrier in this dungeon does NOT stop trash mobs from following you into a boss arena. Be careful not to aggro early adds unless the whole group is prepared to kill them. The Djinn trash mobs (Infernal Overwatch) will also aggro to the entire party if they see one person.

Archaean Seismocratist

Caldera
This is a large AoE attack, which does about 1000 damage and knocks back players, stunning them. It should be avoided if the tank is unable to impair it.

Shadow in the Blood
This is a delayed AoE attack cast on the tank, and cannot be cleansed. If allowed to cast, it will look like this, and move with the tank:

Lustrehunter

At several points during this fight, the boss will cast Fallback, stun the party, and run away. The boss will then run to a predetermined point and start buffing itself with Arcane Exposure until a party member goes into LOS.

Once the stun runs off, the party should run to chase down the boss. The arena looks like a maze, but aside from short dead ends it’s actually very linear, and the boss’s path is fixed.

Occluding Lens
With this ability, the boss will put a reflection shield on himself. Be cautious.

Prime maker

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Prime Maker starts out with a powerful Blast Shield, pictured above, that reflects ALL damage done to him back to the player. DO NOT attack him while the shield is up; you will quickly kill yourself!

At the start, everyone else stays at the entrance while the tank runs close enough to the boss to get his attention, then runs over to one of the three pools of water scattered around the arena. When the boss steps in a pool of water, his shield vanishes.

The tank must then immediately pull the boss over to the next pool of water, in order to be ready to dunk him again.

Adds called Fires of Sheol spawn constantly from the center of the arena. These adds float to the boss, and give it 10 stacks of a buff called Heat. When Heat reaches 100 stacks, the boss’s shield returns.

Carburizing Flames
If Carburizing Flames is not impaired, this is what will appear:

Furnace Blast
While Furnace Blast is casting, it appears as a large fiery AoE.

Flagellatrix Superior

This arena is made up of tight corridors, forming a figure-eight with an extra loop to the side. Patrolling the arena are three large Piston Predators, commonly called dogs by players, which the group should avoid entirely.

You’ll be going down the same path this dog is, following a long distance behind it. Don’t enter until after the dog has turned the corner at the far end of the path it’s on in that picture. Be sure to look right, too, to make sure a dog isn’t coming down that path!

Spitelance
Spitelance is a long dash attack that is easily dodged.

Hadean Guard: Iscariot, Cassius, Brutus

When one of these three bosses dies, a living one is fully healed, and grows stronger and gains new abilities. This fight can thus have different kill orders and turn out very differently (as can the bosses’ HP totals). However, the near-universally accepted kill order is Iscariot, then Cassius, then Brutus. One alternate strategy will be mentioned; check with the other members of the group to make sure everyone knows what the group will be doing.

Phase 1: Iscariot, Cassius, and Brutus

Iscariot has a dangerous attack she casts constantly, so she should die first.

She will frequently cast Immolation Invocation on a random player other than the tank. Everyone needs to watch their feet – if fire appears at your feet, start running and keep running until it stops. If you stay still, you’ll die. Don’t run into other players or you’ll hurt or kill them too.

Phase 2: Cassius and Brutus

When Iscariot dies, the nearest living boss will heal, receive a buff, and start casting Painwheel Overdrive, a large circle AoE.

Phase 3: Brutus Alone

When Cassius dies, Brutus heals and grows stronger, and gains deadly new abilities.

Body Hammer
Periodically Brutus will start casting Body Hammer. Everyone must pay attention to this, and immediately run up to the boss. He will then attempt to dash attack to kill a random player other than the tank. If all party members are close enough, this will instead do absolutely nothing.

All group members must be very close to cancel Body Hammer – not just within melee range, but actually overlapping Brutus as much as possible, ‘hugging’ the boss. Pictured is a successful group hug of Brutus:

As soon as Body Hammer finishes, DPS and healer should back away, in case Painwheel Overdrive comes next.

Alternate Strategies

An alternate kill order that some groups may find easier is Iscariot-Brutus-Cassius. Kill Brutus during phase 2 rather than Cassius. In phase 3, impair Cassius’s Metallic Purity, it is a very dangerous ability identical to Lustrehunter’s Occluding Lens.

Most groups will not expect this kill order, so ask ahead of time. Other kill orders are not recommended; Iscariot’s Immolation Invocation is already dangerous and grows stronger as others die.

Eblis, dominus inferni in profondis

Eblis is a very mechanically complicated fight; he has many different attacks, and they’re all fairly important to deal with. However, may of his abilities are used by other bosses in this dungeon, and once these mechanics are mastered, he is a pushover.

All Blood Magic users: avoid casting from health, so you won’t kill yourself with Blood Offering on Consummate.

Solar Collapse
Every so often, Eblis will start casting a massive AoE. It has a long cast time easy to avoid, but the group should move well away; it persists for quite a while.

Consummate
Eblis shouts a threat and starts channeling an attack against a random player, who is stunned for the duration of the channel. It does progressively more damage until finally leaving them with 1 HP. Eblis is then stunned for a significant time, and the player can easily be healed to full in the meantime.

If you were targeted by Consummate, don’t use any ability that harms yourself (Cold Blooded, Cannibalize, Death from Above) until you’ve been healed!

All Blood Magic users should avoid casting consumers with health for this fight – if Blood Offering is active when Eblis uses Consummate, it can easily kill you the instant Eblis brings you to 1 HP.

Bubble Phase: Cast Out

At certain HP thresholds, Eblis will teleport to the center of the arena and cast Cast Out, which pulls in all the players to an alternate bubble phase.

Unless his HP is already extremely low, Eblis will have a different and much smaller HP bar for bubble phases. This bar starts at full, and when it is reduced to 1, Eblis will end the phase, and return to the HP total he had before it began.

During Cast Out, there are many AoEs on the ground to avoid, and Eblis will frequently cast Vanquish, a large column AoE. Do not impair that one, save your impairs for Painwheel Overdrive. Do not attempt to run too far from Eblis – if you leave the ‘bubble’, you’ll die.

Painwheel Overdrive
During Cast Out, Eblis can cast a large circular AoE called Painwheel Overdrive, which you’re likely familiar with by now.

If Eblis does not switch HP bars for a Cast Out, then the phase will last until he is truly killed.