Online:Arx Corinium

Group Dungeon
Discoverable	Yes
Completion	Objective
Dungeon	Yes
# of Zones	1
Zone
	Venomous Fens, Shadowfen
Location
	Southwestern Shadowfen
Instanced Dungeon
Min Level	18
Group Size	4
Bosses	3
Mini-Bosses	3
Veteran Speed Run Target	20 mins
Loading Screen
	The Second Empire made some advances into the periphery of Black Marsh, but they didn't stay long. Arx Corinium, once an Imperial fort, is now occupied by denizens of the deep swamp—and even stranger things.

Arx Corinium

Arx Corinium is a group dungeon found in western Shadowfen.

While previously constructed and held by the Imperials, the fort has fallen into disrepair and is overrun with Lamias. A group of nereids now occupy the flooded fort and focus on restoring balance to the land. Rumors say the fort is home to a great source of power, although it is perverse, corrupted. You can learn about its location from Mindil the Untested in Marbruk, Abzag the Monster in Shornhelm, or Maela the Crone in Stormhold.

Its dungeon sets are Lamia's Song, Medusa, and Undaunted Infiltrator.

There are always 4 treasure chests available to find in this dungeon, which may contain weapons, armor or jewelry from the dungeon's sets.

Related Quests[edit]

Arx Corinium Objective: Explore the ruins of the Imperial fort Arx Corinium. / You helped the Nereid Sisters defeat the lamia nest.
- Force of Nature: Help three nereid sisters reclaim an abandoned Imperial fort.
Pledge: Arx Corinium: Prove you are truly Undaunted by clearing Arx Corinium.
Arx Corinium Pledge: Explore Arx Corinium and return Undaunted. (disabled since Patch 2.6.4)

Characters[edit]

Arx Corinium
Sister of Floods Sister of Rain Sister of Waves

Enemies[edit]

Normal Enemies[edit]

Elite Enemies[edit]

Lurchers

Minibosses[edit]

Fanged Menace, a giant snake
Matron Ixniaa, a lamia matriarch
Ancient Lurcher, a lurcher

Bosses[edit]

Ganakton the Tempest, a wamasu
Sliklenia the Songstress, one of the lamia matriarchs, and her pet
Sellistrix the Lamia Queen, the leader of the lamias

Books[edit]

Arx Corinium: First Seed Report by Centurion Pontius — An Imperial officer's journal outlining the difficulties in the construction of Arx Corinium
Fair Argonian Maiden — A lewd Argonian poem (just outside the entrance)

Sets[edit]

Set Name	Bonuses	Location(s)	Set Type
Lamia's Song	2 items: Adds 25-1096 Maximum Magicka 3 items: Adds 3-129 Magicka Recovery 4 items: Adds 25-1096 Maximum Magicka 5 items: When you use an Ultimate ability, you and your group members within 20 meters of you heal for 0-25 Health and restore 0-25 Magicka and Stamina per Ultimate spent.	Arx Corinium	Light Armor
Undaunted Infiltrator	2 items: Adds 25-1096 Maximum Stamina 3 items: Adds 25-1096 Maximum Stamina 4 items: Adds 15-657 Critical Chance 5 items: When you use an ability that costs Magicka while in combat, you increase the damage of your Light and Heavy Attacks against monsters by 38-1645 for 10 seconds.	Arx Corinium	Medium Armor
Medusa	2 items: Adds 15-657 Critical Chance 3 items: Adds 15-657 Critical Chance 4 items: Adds 15-657 Critical Chance 5 items: Adds 20-892 Critical Chance 5 items: Gain Minor Force at all times, increasing your Critical Damage by 10%.	Arx Corinium	Heavy Armor
Sellistrix	1 item: Adds 25-1096 Maximum Stamina 2 items: When you deal damage you create an earthquake under the enemy that erupts after 1.5 seconds, dealing 975 Physical damage to all enemies within 4 meters and stunning them for 3 seconds. This effect can occur once every 6 seconds and the damage scales off the higher of your Weapon and Spell Damage.	Arx Corinium	Monster Helm Sets

Achievements[edit]

There are seven achievements associated with this dungeon:

Achievement		Points	Description
Normal
	Arx Corinium Vanquisher	10	Defeat the Ancient Wamasu, the Lamia Songstress, and the Lamia Queen.
Veteran
	Arx Corinium Conqueror	15	Complete Veteran Arx Corinium by defeating the Fanged Menace, Ganakton the Tempest, Sliklenia the Songstress, Matron Ixniaa, the Ancient Lurcher, and Sellistrix the Lamia Queen.
	Snake Skinner	50	Defeat Sellistrix the Lamia Queen in Veteran Arx Corinium, after invoking the Scroll of Glorious Battle.
	Veteran Lamia Slayer	10	Defeat 400 Lamias in Veteran Arx Corinium.
	Veteran Snake Slayer	10	Defeat 175 Giant Snakes in Veteran Arx Corinium.
	Arx Corinium Survivor	50	Defeat the Fanged Menace, Ganakton the Tempest, Sliklenia the Songstress, Matron Ixniaa, the Ancient Lurcher, and Sellistrix the Lamia Queen in Veteran Arx Corinium, without suffering a group member death.
	Arx Corinium Assassin	50	Defeat the Fanged Menace, Ganakton the Tempest, Sliklenia the Songstress, Matron Ixniaa, the Ancient Lurcher, and Sellistrix the Lamia Queen in Veteran Arx Corinium within twenty minutes of starting the dungeon. Timer starts when players engage the first group of nesting serpents.

Notes[edit]

Before dungeon scaling was introduced in Update 5, Arx Corinium was designed for levels 28-31.
While traveling Shadowfen within the vicinity of Arx Corinium, you may spot a distant, non-hostile nereid in the direction of the dungeon that vanishes into the swamp when approached, only to reappear again in the direction of the dungeon, leading you toward it.