Crucible of Eternity (often shortened to "CoE") is a legacy Dungeon available in the base game. In Crucible of Eternity Path 3, you will escape this Inquest research facility through the Front Door.
Check out the Guide for Slaying Sigils and Potions if you want to maximize your damage output in this dungeon.
Once completed, this dungeon path will reward you with:
- 59 Silver
- 100 Tales of Dungeon Delving
Alchemic Spillway and Central Data Repository
Escorting Agent Spire
The goal is to Escort Spire through the corridor filled with enemies. The simplest strategy is to kill every enemy in the room, but this can be quite of challenge, especially because of the wolves at the end of the corridor. It is essential to Dodge as soon as you see them leaping towards you. The Icebrood Elementals also have a deadly attack that comes in the form icy V-shape in front of them. Make sure to never touch it. You also should not get hit by their Ice Meteor attack.
You can speed up Agent Spire using Swiftness or even Superspeed.
After the escort is done, Central Data Repository Waypoint is unlocked. You will be able to select the path after a small dialogue.
Subject Alpha (First Encounter)
After path selection, a gate in the southeast will open. Up ahead is the Subject Alpha. He is surrounded by some Inquest enemies which will turn into Risen Thralls upon death. They will deal primarily deal Burning, Poison and some power damage. Alpha will resummon them at 75% HP somewhere in the room, so just try to cleave them passively with AoEs. He has 2 main attacks which he uses alternating:
- Teeth of Jormag: Casts an AoE with an inner and an outer circle. When it detonates after 3 seconds, everyone standing in it takes high power damage.
- Teeth of Primordus: Casts an AoE similar to . Deals extremely high damage and Burning, so it is essential to walk or Dodge out of it. If you stand within melee range, he will not cast the high damaging AoE and only inflicts the Burning, so try to stay melee at all times.
Subject Alpha will disappear once you bring him to 50% HP. This will open a gate behind him.
The Aquarium and Essence Purification Zone
Golems and Laser Room
The next section can seem somewhat mazy, just look at the minimap to easily traverse it. At the end of it, you will find a room with 5 Elite Inquest Golems. Entering this room unlocks Purification Waypoint.
These Golems can be annoying if not dealt with correctly. The easiest way is walk behind a corner. This will make them follow you, so they are nice and stacked and ready to be cleaved down. Be aware though, as some golems can do a Daze or Knockdown. Some Stability might come in handy here.
The Golems don't have a breakbar, so you can use any CC skill to interrupt them. A Pull in the middle of the room also works. If you wipe to the Golems, you can instantly use Purification Waypoint and quickly attack them again before they start regenerating.
Next, you need to interact with 5 Security Consoles roughly at the same time. 2 of them are in the laser room, the other 3 are located in another room behind behind the laser gate. Touching any of those lasers will kill you. There are horizontal lasers, which you need to avoid by jumping over them, in addition to 2 laser walls moving through the field. Whenever these laser walls reach the end of the corridor, the outer one will disappear for a moment, which allows you to sneak between the two walls and hop past the horizontal lasers to the other side of the door, where the the outer one will once again disappear, giving you access to the next room.
You can hug a wall to bypass the moving laser walls killing you while going through the laser corridor.
You can use Blink skills to facilitate getting past the laser corridor. Just make sure to not blink into any lasers.
Once every player is next to a Security Console, make a countdown and interact with all of them at the same time to progress.
Behind the laser corridor, there are 2 Security Consoles in close proximity to each other. You can interact with both of them by standing directly inbetween them before interacting. This allows you to finish this event with 4 people instead of 5.
The lasers will disappear after the interact was successful. Go up the stairs in the room behind the laser corridor to encounter Mark T-B34RC3.
Magimechanic Upgrade Depot
The Golem is surrounded by 4 turrets that regularily give him Regeneration, Protection, Resolution (the respective Turret is still called Retaliation Turret, the name did not get updated) and Condition Cleanse. The Turrets can be destroyed to prevent the boss from getting the passive effect until the Turret regenerates after 15 seconds. Mark T-B34RC3 has 4 attacks:
- Cage Barrage: He hits his target with both arms for low power damage and throws a projectile that leaves a static field on the ground that resembles the Elementalist's . Crossing the edge of this AoE will Stun you for 2 seconds. Either stay outside or inside of the AoE. The projectile can be reflected or destroyed.
- Firewall Grenade: Hits with his right arm for low power damage and throws a projectile that creates a fire AoE behind his target that resembles Engineer's . Can be reflected or destroyed.
- Ultra Beam: Glows purple and throws 3 projectiles, each hitting for medium power damage and dealing 2 seconds of Knockdown. Can be reflected or destroyed.
- Whirling Assault: He stretches his arms out and spins them while walking towards his target and hitting multiple times. Hits for low damage and does Knockback each hit.
Reflecting Ultra Beam will cause the Golem to break his Breakbar himself completely. If you are struggling, reflecting is a good idea in general since most of his attacks are projectile-based.
After killing the Golem, a door in the north will open.
Go through that door to start the Cannon Event. Your goal is to protect a cannon that needs to be charged up to destroy a wall. There constantly are small bomb golems that walk towards the cannon and try to blow it up. You need to kill them all, but they have very low HP. Additionally, there are Elite Golems spawning that can pressure you quite hard. These will also respawn after they have been killed.
It is possible to delay killing the Elite Golems to prevent a second wave from spawning.
After the timer in the top right corner is over. The wall will be destroyed and you can move on.
Up ahead are some Undead Enemies on the stairs slowly walking to you. You can either go left directly after the door and wait for them to walk by or use Stealth. The rest of the stairs is also filled with enemies, but they don't deal much damage and you can just walk past them and into the Subject Alpha room. Some enemies will follow you and may need to quickly be killed.
Subject Alpha (Second Encounter)
The Fight is similar to the first Alpha Encounter, but he gains some additional attacks:
- He regularily summons Undead Tendrils that hit you for medium power damage with a projectile.
- He occasionally traps players in a crystal, Stunning them. It lasts 30 seconds but ends after 15 seconds. The Stun can be broken if another player destroys the crystal. This is indicated by him jumping in the air. The attack is undodgable. If you are trapped, you can also use a Blink skill to escape.
He disappears at 25% HP, opening the door behind him.
Research Secter and Psychoarcanic Monitoring
Walk through the newly opened door and through the next hallway. Head left afterwards. You will encounter a horde of Destroyer Crablings and several other mobs on the path, but you can ignore all of them. Another door will explode, exposing you to even more enemies, but you can just run past them all. Follow the path, there really is just one way. Once you find yourself in a room with three big lasers and a hole in the middle, the Evolved Destroyer is waiting for you.
Experimental Lab Red
The Evolved Destroyer is in the middle of the island, surrounded by a shield. He is Invulnerable while the shield is up. To destroy it, interact with the 3 Inquest Cryolasers in the room to damage the shield periodically. It will regenerate, so make sure to always have multiple lasers up. After a laser is gone, interact again to re-enable it. One player will be targetted by a reoccuring Tooth of Primordus AoE that deals damage and Knockback, interrupt the interaction that takes a few seconds to complete.
Stability or Aegis can be useful if the AoE is over your cannon. Alternatively, you can kite it next to a laser and instantly start the interaction after it just spawned.
Use the flying hexagons to get to the Destroyer after the shield has worn down. There will be Tooth of Primordus AoEs on the hexagons as well, so pay attention to that. If you fall into the lava, you will receive ticking damage, so just try to reach his platform quickly.
You can repeatedly jump in the lava to reduce the damage you get.
While you fight him, he will cast more Teeth of Primordus that deal high damage, Burning and 3 stacks of Bleeding. After roughly 25 seconds, he re-summons the shield and turns Invulnerable again.
Security Checkpoint and Crucible Access Room
After the Evolved Destroyer is defeated, a door in the west is opened. Use the hexagons or the stairs to leave the platform, head through the door and over the bridge to encounter Subject Alpha a third time. Going through the door unlocks Security Waypoint.
Subject Alpha (Third Encounter)
Subject Alpha gains one additional in the last encounter. Every 10%, he spawns some Alpha's Essences. These will run towards Alpha and once they reach them, Alpha will regenerate some health. The Essences do not have much health, so they can be passively cleaved down with AoEs.
You can Poison Subject Alpha to lower the healing amount per Essence.
After Alpha dies, you might need to kill some final Essences before the path will complete.