A guide to the Leviathan Eater of Worlds Raid lair released with Curse of Osiris DLC.
Escape the Reactor
This is the first encounter in the raid lair and it is just four sets of jumping puzzle combined with a small fight at the end. The idea of the jumping puzzle is that only one person can be on top of a platform or that platform turns red and goes down into the toxic water. The fireteam need to line up and step on platforms one at a time. You also need to move quickly as the platforms turn red themselves after a short period of time. If time is about t run out, the front couple players can quickly rush to the landing platform at the end and it will trigger as complete.
This is the most straightforward jumping puzzle. It is a linear path of platforms. You need players keep jumping on and moving on the platforms to spawn more platforms in front.
For the second set of platforms, the fireteam need to divide into two teams of three and jump over two lines of platforms.
For the third set, platforms can spawn in the back once the front couple platforms have been occupied by players. When this happens, simply have players in the back step on the new platforms and once the new platforms move near the front, have the front players take over.
This final set is a bit tough because of the platforms spawning in non-linear fashion. We found it easiest to have players just follow in a line and all move up a platform occupied by the player in front of you whenever a new platform spawns. This will require some longer jumps at the end but it is more orderly.
Defeat the Loyalists
Once everyone have made it to the final area, the fight encounter triggers. Divide your group into two teams of three, each guarding a side. Loyalists will come in drop ships in waves and all you need is to clear a couple waves for the encounter to complete.
This is a transition phase but there is also a bonus hidden chest you can get along the way.
Inside Engine Room are giant pistons that are moving constantly. When the pistons shift to the left, they will release a massive electric blast that down anyone not inside a safe zone. Safe zones are marked with a yellow square. Moving to a safe zone, wait for the pistols to do their attack, then move out to the next safe zone. Repeat until you get out of the room.
As you fall down the ruins there are six Vex rings you want to pass through. Passing through all six will spawn a chest at the platform below. You don’t need to hit all six in one go and can just die and respawn at the top to jump through any Vex rings you have missed.
Break the Barrier
This is the second encounter in the raid and serves as a intro to the mechanics on Argos. Argos will be encased in a metal cage and you have to remove this cage side by side while disarming the mines planted by Argos.
This fight occurs in the same area as Argos and is a circular room divided into three sections, each section with a platform on which there will be three fires of a specific element color. In total there will be three platforms corresponding to three elements (Void, Arc, and Solar). The area you start the fight will be Void. To the left of it is Solar and to the right of it is Arc.
To start the fight you will need to pick up the Vex Craniums scattered around the area. You will see the message that Argos arms quantum mines when you pick one up.
Then you need to look at the metal case surrounding Argos and see which side have quantum mines attached to it. Call that side out to your group and the color of the mines so your group can energized the appropriate Vex Craniums. If you see two red and one blue mine for example, you will need to bring 2x Vex Craniums to the Solar platform and energize them with the fire there. Do the same to the Arc platform with 1x Vex Cranium. Energizing the Craniums takes about 20 seconds and there will be Vex mobs spawning nearby to try and stop you.
Once the Vex Craniums have being energized, bring them over and shoot at the mines with your energized Cranium. Each mine have a timer before they explode so you want to get this done as fast as possible. Once all the mines are cleared, wait for another wave of mines to spawn in the same side. If a side is done, you should see just the energy shield without any metal parts attached to it and can switch to another side to repeat the same procedure.
You will need to finish disarm mines on all three sides so that there is only the energy shield surrounding Argos to finish the encounter. Look for your chest on the Void platform.
Argos, Planetary Core
What to Bring/Expect
- A mix of subclasses with strong adds clearing or strong boss damage. Titan Sunbreaker works great here for boss damage.
- Rockets with cluster damage (i.e. Sins of the Past, Curtain Call) works great here.
- This is a long fight (~14 minutes) with a very tight DPS check.
- If your group is low on DPS, you may want to try to have 2x damage phase before a Void Energy Spike phase. See under Energy Collection for how that works.
Argos is the final boss of Leviathan, Eater of Worlds raid lair and has a pretty tight DPS check. You need a good mix of subclasses that can clear out adds quickly and subclasses that can deal heavy damage during the damage phase. Hunter Nightstalker with Orpheus Rig is excellent at generating orbs for your team so they have their Supers up for the damage phase. Titans Sunbreakers can deal massive damage during the damage phase. Warlocks can use Stormcaller to quickly clear the adds in the fight.
This fight is divided into several distinct phases.
The room to fight Argos is circular and divided into three areas. Each area will have a platform on which there will three fires of a single element type. In total there will be three platforms corresponding to three elements (Void, Arc, and Solar). The area you start the fight will be Void. To the left of it is Solar and to the right of it is Arc.
Argos will have a massive rhombohedron shield covering him that makes him immune to all damage. You can open this shield temporarily by doing the energy collection phase. Only one side of Argos’ shield can be opened at a time and this side is one of the three areas. To see which side it is, go to each area and look at Argos until you see three orbs on the three corners of Argos’ shield. When you spot this, call it out to your group so they know where to position themselves to open the shield.
Also scattered around the fight area are six Vex Craniums. They are eventually scattered around the room and some won’t spawn until you pick up one nearby. What you want to do here is to bring the Vex Craniums to the platforms with the fire corresponding to the elemental color of the orbs you see on Argo’s shield. So if you see 2x Blue and 1x Purple Orb for example, bring 2x Vex Craniums to the Arc platform and 1x Vex Cranium to the Void platform. You want to interact with the elemental fire while carrying the cranium and this will give you a button to energize the cranium. The cranium will be “cooking” for a few seconds (~20 seconds) and then it will be ready for use.
- The three extra Vex Craniums should be bought to the platform in the area where Argos’ shield will open and be energized there. They will be used to do massive damage to Argos during the damage phase. If that platform is full, have someone grab a cranium that has finished energizing and hold it to open up a spot. If you are going for two damage phases before the Void Energy Spike phase, ignore this.
You can try and get two damage phases in before the Void Energy Spike happens. To do this you need to prepare beforehand. There is a pattern to the orbs on Argos shield and this pattern get reset with every Void Energy Spike phase. Basically, keep this in mind (Void –> Solar –> Arc). It is basically a clockwise pattern if you are going by the platforms. What this does is that it allow you to predict the shield for the second damage phase before the Void Energy Spike. For example, if you get 2x Arc and 1x Solar orbs on Argos’s shield for the first damage phase, the next damage phase before the Void Energy Spike is going to be 2x Void and 1x Arc. Once the Void Energy Spike phase occurs, the pattern get reset.
- You need to decide as a group if you are going for the two damage phase strat or use the craniums for damage on the boss during the damage phase. If you are short on damage then maybe saving the craniums for a second damage phase might be better.
While you are going around gathering Vex Craniums and energizing them. Massive waves of Vex will spawn. This includes the standard Vex Goblins, Fanatics and the elite shielded Vex Minotaur. They are attracted especially to platforms where a Cranium is being energized and those not holding a Cranium should devote their time to clearing the adds. Hunters can use their Nightstalker elite to clear out adds and drop orbs to recharge Supers of your teammates so they are ready for the damage phase.
Once all six Vex Craniums have finished energizing, it is time to open up his shield and deal damage to Argos. Make sure the designated players have grabbed the energized Vex Craniums corresponding to the orbs on Argos’ shield. Rest of the Vex Craniums should be sitting on the platform in the area where his shield will be opened and all energized (unless you are going for two damage phase). Clear all the adds in the area and then have the three players holding the designated Vex Craniums shoot the orbs with their Craniums. They should do this roughly around the same time and the three orbs will go in the hole in the middle. This open up Argos’ shield. You should have a small amount of charge left in each Vex Cranium. Aim them at Argos’ head, each tick does massive damage.
The players not using the Craniums to open up Argos’ shield should each grab an energized Cranium once the shield is open and aim it straight at his head (unless you are going for a second damage phase before Void Energy Spike). These Vex Craniums deal massive damage to Argos during this damage phase and is absolutely essential in getting him down. Once you have used up the Craniums, use your Supers, Power weapons (Cluster Rockets like Curtain Call or Sins of the Past will do massive splash damage) and class abilities such as Rally Barricade or Empowering Rift to do as much damage as you can to Argos’ head. Ideally you should aim to bring him down by 25% of his HP every damage phase.
While you are damaging Argos during this phase there are two things to beware of. Argos will shoot nets at random members in the group. You can destroy them while they are in the air but they move extremely fast. This net will grab players and throw them up in the air towards Argos. This will result in their immediate death unless the trapped player is rescued. To rescue them all you need to do is to shoot at the nets to break them. Beware that the nets will immediately cancel your active Super so getting hit by one is a huge damage loss. In addition to the nets, Argos will spawn harpies in the air. If they are not killed, they will home in on a random player like a homing missile and explode all over them dealing massive damage.
Void Energy Spike
Void Energy Spike is a phase on a timer where you must destroy two of Argos’ weak spots or face an immediate raid wipe. It usually occurs a few seconds after a damage phase (depending on how late you opened Argos’ shield). During this phase Argos’ shield will completely open and circular platforms will spawn around Argos that allow you to get around Argos. Since this phase occurs on a timer, you might have some time to fetch Vex Craniums and get them energized to prepare for the next damage phase. Keep in mind though that any Vex Craniums that are not energizing on a platform when this phase begins will disappear (even ones you are carrying)
Argos have six weak spots that comes in pairs of three. They are highlighted in white during this phase. Two of the weak spots are his hands, two are the sides of his back neck and the last two are the two sides of his skull at the top.
To destroy these weak spots you must as a fireteam deal continuous damage to it until it breaks. If no one shoots at it it will regenerate its HP. When you see yellow numbers popup, you have hit the correct spot. Otherwise you will need to reposition yourself to find a place where you can shoot at it. The white spots will glow in red shortly before it is destroyed.
There will be three of these Void Energy phases during the fight so typically you can as a group coordinate so that you destroy both of Argos’ hands in the first phase, then the neck, and then finally the top of the head at the last phase.
You should have a few seconds after destroying the weak spots to do some damage to Argos but you don’t have the damage boost in this phase so you will barely move his HP.
Over the fight with Argos is a repeating pattern of Energy Collection –> Damage Phase –> Void Energy Spike. This pattern will repeat until you get the fourth Damage Phase. After that Damage Phase is an enrage phase where you will do regular non-boosted damage to Argos for a few seconds before he explodes and kill everyone. This enrage phase is only useful if you somehow finish the last damage phase with a silver of HP to spare on Argos. Otherwise you won’t have much hope of killing Argos.
As mentioned above in Energy Collection section, it is possible to get 2x damage phase in before the Void Energy Spike happens. You can predict the orb patterns of the second damage phase before the Void Energy Spike. Whether you use the remaining skulls for extra damage during the damage phase or save them for a second damage phase is up to your group.
This fight have a very tight DPS check so you need to use the skulls to boost your damage during the damage phase and stack as much damage as you can during that phase.