Valtan starts the fight with 2 armor stacks, which needs to be broken before he reaches x130 HP and starts the Wipe Pattern. To break his armor, the raid needs to deal a certain amount of Weak Point Damage. After you force Valtan to charge into a wall, which incapacitates him for a brief moment, you can use Combat Items and skills with Weak Point Damage affix to destroy his armor. The charge animation is easy to predict, Valtan targets a random player and stomps 3 times with his fist on the ground before charging towards his target.

To be more efficient, I recommend that one player throws a Corrosive Bomb as soon as Valtan starts the charging animation. The other 7 players should wait until Valtan is incapacitated, to throw a Destruction Bomb at him.

Once Valtan reaches x130 HP, he starts to prepare a combo attack consisting of 2 axe strikes towards the ground. The 2nd strike can one shot players if they don't fulfil certain requirements. To survive this patter, you can choose one of the 2 methods below.

Method 1: The easiest way to survive this pattern is to simply use the Sidereal: Balthorr as a raid lead and provide everyone with the buff needed to prevent getting 1 shotted. Make sure to ping the location where you want to summon Balthorr, since a player needs to be in that summoning circle for a brief moment to get the buff.

Around x110 HP, Valtan summons 1 pillar at each ordinal direction and leaps into the sky. After a short delay, a huge yellow zone and a small cone-shaped red zone appear. The red zone locks on to a random player and follows his movements for a few seconds. Afterwards, Valtan lands in the center of the arena and deals damage. The damage from the yellow zone can be avoided by standing behind a pillar. If you are the player targeted by the red zone, make sure to not point it towards a pillar. Place it right between 2 pillars and “wiggle” around until it stops tracing you. Once that is the case, either try to get fast behind a pillar in the yellow zone or simply move away from the red zone and use Time Stop Potion.

At around x80-85 HP, Valtan leaps into the sky and returns to the ground after a short delay to destroy either the outer left or right ring of the arena. A red telegraph indicated the part which will be destroyed by Valtan. So make sure to group up in the center and move towards the opposite side as soon as you see the red telegraph.

From this point on, the difficulty increases. Now you can fall off the ledge and die, if you get pushed by Valtan's attacks. So play safe and stay away from the broken part of the arena. Afterwards, he will once again target a player with a red zone. As the targeted player, you should try to point the red zone towards the broken part of the arena if possible. And similar to the last time, after the red zone disappears, make sure to avoid standing in the explosion radius of the pillars.

At x65 HP, the Counter Attack pattern starts. Similar to most of the main patterns, Valtan leaps into the air and lands in the center of the arena. Afterwards, he stomps once on the ground and causes a delayed explosion below each player. To avoid taking unnecessary damage, group up a few steps away from the center, jump towards the boss as soon as he stomps on the ground.

At around x35-40 HP, Valtan once again leaps into the sky and returns to the ground after a short delay to destroy the remaining outer ring of the arena. Group up at the edge of the side, which already got its outer ring destroyed in the previous Stage Break + Pillar Hug pattern.

From this point on, there is no wall to prevent you from getting pushed off the ledge. Afterwards, he will once again target a player with a red zone. And similar to the last time, after the red zone disappears, make sure to avoid standing in the explosion radius of the pillars.

This pattern starts at around x17-15 HP bar. Valtan charges into a portal and reappears back in the center with a slam attack towards the bottom side of the arena, so avoid standing on those positions. Afterwards, he performs a few attack patterns one after another in a fixed order listed below. Be aware, almost any hit can push you off the arena and kill you immediately.

Method 1: The easiest way to survive this pattern is to group up on the left side of the arena, as soon Valtan initiate the pattern by disappearing into the portal. By doing so, you can force him to use the first of the four strikes towards the left. Dodge away from that side as soon as you see the telegraph and return to that place so that the raid lead can use Sidereal: Balthorr on the left side. With the protection of Balthorr, you can't get pushed down the ledge. But you should still try to avoid as much damage as possible from the 3 following attack patterns listed above.

Valtan starts the Ghost mode with 4 armor stacks on Normal Mode and 6 on Hard Mode. To deal normal damage to him, you need to remove all the stacks by successfully countering the Ghost Clone Counter pattern.

After successfully clearing the x160 HP Armor Break Phase, the charge attacks of Valtan can be interrupted. To do so, use a Counter Attack skill shortly after the 2nd fist stomp towards the ground.

Valtan grabs and holds his axe on one hand in the air for a brief moment before slamming it into the ground. On impact, rocks in a cross shape pattern appear, which deal damage and push the player on hit. Safe spots are left and right side of the boss.

If Valtan leaps forward and summons on impact, rocks in a cross shape pattern, stay away from him. He will follow up with a backwards spin attack.

Valtan swings his axe 3 times and strikes the area in front, behind and in front of him again. On impact, a cone-shaped shockwave appears, dealing damage and pushing the player on hit.

This attack can be easily avoided by simply staying close and in front of the boss.

The boss locks on to a random player and strikes 3 times towards him, dealing damage around the axe impact area. The 4th strike strikes on the same area as the previous one, but deals more damage in a bigger area. Try to avoid leading the strikes towards party members.

Valtan Roars, holds his axe on one hand and prepares for a forward swing attack. Pay attention to the axe. If the axe has a lightning effect, stay away from the impact area. If it doesn't, stand in front of the boss.

Valtan prepares for a devastating attack while being protected by a shield. Destroy the shield with your normal skills first. Once it is destroyed, use your skills with high Stagger Damage to interrupt the boss. But pay attention to the floor, if cracks appear on the ground, move away from them to avoid the follow-up pull attack.

This attack is slightly modified, if Valtan uses it after the Armor Break Phase. The major difference is, after throwing 3 projectiles, the boss returns to the ground, dealing damage in a small impact area but followed by a huge shockwave, which can be deadly if you are too close to a ledge. Avoid the shockwave by dodging to the area of initial impact.

Valtan charges into a portal and summons multiple portals at random spots. He will use the portals to perform multiple charge attacks. A faint flowing line indicates his charging path. Stay away from ledges where you can fall off and use Time Stop Potion if needed.

Valtan imprisons 3 random players. The remaining players need to lift the imprisonment as soon as possible. After a short delay, the boss roars and deals damage to everyone if anyone is still imprisoned.

Valtan holds his hand in front of him and rushes towards the edge of the arena while grabbing everyone on his path. Once he reaches his destination, he turns around and roars, which hits everyone in a wide angle. Avoide getting grabbed and stay very close left or right of Valtan to avoid getting hit by the roar.

Valtan sends out a small shockwave around him and prepares for an attack while holding his axe in his right hand slightly behind him. Shortly before he unleashes the attack, a Counter Attack opportunity appears to interrupt it. This will be repeated 2 additional times. If you fail to interrupt his attack, everyone takes high damage.

Valtan grabs his axes with both hands and pulls it to the side and prepares for a counter-attack. Everyone should stop dealing damage and stay right below the hilt of his axe. If you succeed, the follow-up spin attack won't hit the players below the axe. If not, the boss will perform a spin attack which will hit everyone. This attack is especially deadly during the Ghost Phase, since it can push you off the arena.

The boss smashes on the ground with both fists at the same time, causing an explosion in front of him, followed up by a shockwave. To avoid the shock wave, jump towards the initial explosion area.

During the Ghost Phase, Valtan summons frequently ghost clones at the edge of the arena, which needs to be countered. If you counter-attack and interrupt the clones, you can remove one of the armor stacks on Valtan. Additionally, the Sidereal bar fills up for a considerable amount. If you fail to interrupt the attack on time, the clone uses the Cross attack, which can push the players off the arena.

In frequent intervals, multiple pairs of portals spawn at the edge of the arena. After a short delay, a ghost clone of Valtan will charge from one portal to another while pushing down everyone on their path. So be especially careful, if you fight close to the ledge.

Valtan grabs nearby players and follows up with a roar attack. This attack has a high chance to kill the players who got grabbed or get hit by the roar attack. He uses this patter 3 times around x39, x27 and x14 HP bars.