Instance-boss Core


Basics

As the server evolves, new high-level epic bosses are introduced. To ensure accessibility for all players, low-level bosses are moved into instances, allowing everyone the chance to engage with them.

Masterwork Team presents a battle with the epic boss Construct Core Inzone Boss Lv. 80 in the instance zone. Gather a group of like-minded people, defeat the boss and receive guaranteed epic jewelry!


Entry conditions and cooldown

Pay attention!

Bosses Core and Orfen are in the same instance. You can only get to one boss per cooldown.


Related missions

Defeat Core/Orfen Daily
Defeat Core or Orfen to complete this mission.
The entrance to the instance zone is located in Ancient City Arcan.
Target List

Tactics

Instance map
Core instance l2
Green line — Yalo path
Orange dot — a monster that lowers the Core's physical defense
Blue dot — a monster that lowers the Core's magic defense

After entering the instance, the group appears in a selection room.

To move to the Core, the party leader must talk to NPC Human Yalo To Core .

Yalo l2

After choosing the boss, the party will be transported to the bridge on the third floor of the Cruma Tower in a parallel dimension. At the end of the bridge, you will see a room with monsters. Among the monsters, there is a Humanoid Yalo Key Keeper Lv. 78 running around in a circle. There are rumours that he can turn into a powerful demon. But this is not certain. Be prepared for the fact that the monsters are very strong!

Core instance l2

Kill the monsters near the entrance to the room and wait for Yalo to reach you. Use crowd control skills to slow and kill him. After Yalo dies, the party leader will receive Cruma's Secret Key Cruma's Secret Key NG , which opens the Boss room.

There are two ways to get into the boss room. The first way is to clear the way, killing monsters one after one. The second way is to have the tank gather all the monsters on the way to the door. The group leader opens the room, and the tank leads the monsters into the corner between the columns to the right of the door. The group then kills the monsters with mass abilities.

Pay attention!

Monsters see invisible players. Sneaking around will not work!

After you've dealt with the monsters and restored your health and mana, you'll have to kill a mini-boss to remove the Core's invulnerability effect and lower its defence.

Crippled Physical Giant l2
Crippled Magic Giant l2

Pay attention!

As soon as you hit one of the monsters, another will disappear. If you try to attack both Minions simultaneously, both will disappear forever. Attack only the monster you need!

Both monsters unleash an area-of-effect ability in the sector directly in front of them. To simplify the fight, we recommend pulling the monster from the platform beneath it rather than from the side of the stairs. The tank should gain the monster's attention and move it to a corner, positioning its back toward the group.

After the Minion dies, the Core loses its invulnerability and receives a permanent debuff that reduces physical or magical defence:

These effects share a common type with some debuffs of similar effect. For example, after killing a Physical Minion, you will not be able to apply the effect of Hex Hex Lv. 1 to the Core

Core l2

After removing the invulnerability, you can attack the boss. At this point, 10 monsters will spawn near the Core — similar to those you encountered in the previous room. Focus on eliminating them first before targeting the boss. The Core is vulnerable to all debuffs, but remember that the boss does not damage players. The primary threat comes from the waves of monsters, so managing them is key to victory.

Pay attention!

Maximum damage to the boss is limited to 35,000 points.

Each time the Core's health decreases by 10%, a new wave of monsters will spawn. How you handle them will depend on your group's strength and coordination. If you’re confident in your abilities, continue attacking the Core while using area-of-effect skills to eliminate the monsters. However, if your group lacks coordination or gear, it’s safer to pause your attack on the Core and focus on defeating the monsters before resuming the fight.

Pay attention!

The aggression of monsters towards individual characters depends on the amount of personal damage inflicted on the boss. Use this knowledge when choosing tactics for killing the boss.


Levelling SA

On the boss, SA is levelled from level 10 to 18. The chance is individual for each group member:

Reward

In the fifth season of Masterwork, drops and experience for completing the instance became personal.

Experience

The experience for killing the Core is fixed for each group member, which means it doesn't matter how many of you there are — 7 or 9, each player will receive the same amount of experience.

Pets gain experience without penalty for the difference in levels between the owner and the pet.

Base experience for killing Construct Core Inzone Boss Lv. 80 — 7 000 000 EXP.

Base experience is multiplied by the current experience rate from RB (read patchnote), bonus from the Rune of Experience and the buff from the achievement.

Let's calculate the experience with and without boosts as an example.

Players of levels 78 and 80 completed the Core instance without experience boosts:

  • Player level 78 received 7,000,000 * rate x2 = 14,000,000 Experience
  • Player level 80 received 7,000,000 * rate x0.2 = 1,400,000 Experience

Then they went through the Core instance a second time, but with boosts:

  • Player level 78 received 7,000,000 * rate x2 = 14,000,000 Experience
  • A level 80 player has a Daily Online Reward buff of +30% Experience and an Experience Rune* of +50% Experience, he received 7,000,000 * rate x0.2 + (1,400,000 * 0.3) + (1,400,000 * 0.5) = 1,400,000 + 420,000 + 700,000 = 2,520,000 Experience

*Daily Online Reward — "Daily Online" achievement reward.

*Experience Runes are available in two variations: +30% and +50%. Their bonuses do not stack, meaning the player will only benefit from the higher rune when multiple runes are active simultaneously.

Personal reward

After the Core dies, each player who was near the boss will receive a chest with personal rewards

Core's Box Core's Box NG . Contents of the chest:

Pay attention!

15 Core's Soul Fragment Core's Soul Fragment NG and Immortal Ring Immortal Ring Stun Resistance S with any effect (obtained from Baylor) can be exchanged by Dwarf Pona Collectioner in Luxury Shop for the real Ring of Core Ring of Core C

Drop

On the seasonal server, all drop were moved to the personal chest Booty from Orfen & Core Booty from Orfen & Core Tradable Chest NG , except epic jewelry — Ring of Core Ring of Core C will drop on the ground, as before.

MasterWork 2024: Contents of the chest
Masterwork Eternal: Common drop
Item Amount Chance
Group chance: 100%
Ring of Core Ring of Core C 1 2.5%
Group chance: 1.5%
Unidentified Basalt Battlehammer Unidentified Basalt Battlehammer S 1 25%
Unidentified Imperial Staff Unidentified Imperial Staff S 1 25%
Unidentified Arcana Mace Unidentified Arcana Mace S 1 25%
Unidentified Dragon Hunter Axe Unidentified Dragon Hunter Axe S 1 25%
Group chance: 1.5%
Unidentified Forgotten Blade Unidentified Forgotten Blade S 1 25%
Unidentified Demon Splinter Unidentified Demon Splinter S 1 25%
Unidentified Saint Spear Unidentified Saint Spear S 1 25%
Unidentified Heaven's Divider Unidentified Heaven's Divider S 1 25%
Group chance: 1.5%
Unidentified Angel Slayer Unidentified Angel Slayer S 1 50%
Unidentified Draconic Bow Unidentified Draconic Bow S 1 50%
Group chance: 1%
Unidentified Dynasty Cudgel Unidentified Dynasty Cudgel S 1 20%
Unidentified Dynasty Phantom Unidentified Dynasty Phantom S 1 20%
Unidentified Dynasty Mace Unidentified Dynasty Mace S 1 20%
Unidentified Dynasty Staff Unidentified Dynasty Staff S 1 20%
Unidentified Dynasty Crusher Unidentified Dynasty Crusher S 1 20%
Group chance: 1%
Unidentified Dynasty Sword Unidentified Dynasty Sword S 1 25%
Unidentified Dynasty Bagh-Nakh Unidentified Dynasty Bagh-Nakh S 1 25%
Unidentified Dynasty Halberd Unidentified Dynasty Halberd S 1 25%
Unidentified Dynasty Blade Unidentified Dynasty Blade S 1 25%
Group chance: 1%
Unidentified Dynasty Knife Unidentified Dynasty Knife S 1 50%
Unidentified Dynasty Bow Unidentified Dynasty Bow S 1 50%
Group chance: 2%
Unidentified Sealed Imperial Crusader Helmet Unidentified Sealed Imperial Crusader Helmet S 1 20%
Unidentified Sealed Draconic Leather Helmet Unidentified Sealed Draconic Leather Helmet S 1 20%
Unidentified Sealed Major Arcana Circlet Unidentified Sealed Major Arcana Circlet S 1 20%
Unidentified Sealed Imperial Crusader Shield Unidentified Sealed Imperial Crusader Shield S 1 20%
Unidentified Sealed Arcana Sigil Unidentified Sealed Arcana Sigil S 1 20%
Group chance: 2.5%
Unidentified Sealed Imperial Crusader Gauntlets Unidentified Sealed Imperial Crusader Gauntlets S 1 16.67%
Unidentified Sealed Imperial Crusader Boots Unidentified Sealed Imperial Crusader Boots S 1 16.67%
Unidentified Sealed Major Arcana Gloves Unidentified Sealed Major Arcana Gloves S 1 16.66%
Unidentified Sealed Major Arcana Boots Unidentified Sealed Major Arcana Boots S 1 16.66%
Unidentified Sealed Draconic Leather Gloves Unidentified Sealed Draconic Leather Gloves S 1 16.67%
Unidentified Sealed Draconic Leather Boots Unidentified Sealed Draconic Leather Boots S 1 16.67%
Group chance: 1.5%
Unidentified Sealed Draconic Leather Armor Unidentified Sealed Draconic Leather Armor S 1 25%
Unidentified Sealed Major Arcana Robe Unidentified Sealed Major Arcana Robe S 1 25%
Unidentified Sealed Imperial Crusader Breastplate Unidentified Sealed Imperial Crusader Breastplate S 1 22%
Unidentified Sealed Imperial Crusader Gaiters Unidentified Sealed Imperial Crusader Gaiters S 1 28%
Group chance: 100%
Basalt Battlehammer Head Basalt Battlehammer Head NG 3 - 7 25%
Imperial Staff Head Imperial Staff Head NG 3 - 5 25%
Arcana Mace Head Arcana Mace Head NG 3 - 5 25%
Dragon Hunter Axe Blade Dragon Hunter Axe Blade NG 3 - 7 25%
Group chance: 100%
Forgotten Blade Edge Forgotten Blade Edge NG 3 - 7 25%
Demon Splinter Blade Demon Splinter Blade NG 3 - 7 25%
Saint Spear Blade Saint Spear Blade NG 3 - 7 25%
Heavens Divider Edge Heavens Divider Edge NG 3 - 7 25%
Group chance: 100%
Angel Slayer Blade Angel Slayer Blade NG 3 - 7 50%
Draconic Bow Shaft Draconic Bow Shaft NG 3 - 7 50%
Group chance: 100%
Sealed Imperial Crusader Helmet Pattern Sealed Imperial Crusader Helmet Pattern NG 4 - 10 20%
Sealed Draconic Leather Helmet Pattern Sealed Draconic Leather Helmet Pattern NG 4 - 10 20%
Sealed Major Arcana Circlet Pattern Sealed Major Arcana Circlet Pattern NG 4 - 10 20%
Sealed Imperial Crusader Shield Part Sealed Imperial Crusader Shield Part NG 4 - 10 20%
Sealed Arcana Sigil Piece Sealed Arcana Sigil Piece NG 4 - 10 20%
Group chance: 100%
Sealed Imperial Crusader Gauntlets Design Sealed Imperial Crusader Gauntlets Design NG 4 - 10 16.67%
Sealed Imperial Crusader Boots Design Sealed Imperial Crusader Boots Design NG 4 - 10 16.67%
Sealed Major Arcana Gloves fabric Sealed Major Arcana Gloves fabric NG 4 - 10 16.66%
Sealed Major Arcana Boots Design Sealed Major Arcana Boots Design NG 4 - 10 16.66%
Sealed Draconic Leather Gloves Fabric Sealed Draconic Leather Gloves Fabric NG 4 - 10 16.67%
Sealed Draconic Leather Boots Design Sealed Draconic Leather Boots Design NG 4 - 10 16.67%
Group chance: 100%
Sealed Draconic Leather Armor Part Sealed Draconic Leather Armor Part NG 4 - 10 25%
Sealed Major Arcana Robe Part Sealed Major Arcana Robe Part NG 4 - 10 25%
Sealed Imperial Crusader Breastplate Part Sealed Imperial Crusader Breastplate Part NG 4 - 10 25%
Sealed Imperial Crusader Gaiters Pattern Sealed Imperial Crusader Gaiters Pattern NG 4 - 10 25%
Group chance: 100%
Sealed Dynasty Helmet Piece Sealed Dynasty Helmet Piece NG 1 - 3 20%
Sealed Dynasty Leather Helmet Piece Sealed Dynasty Leather Helmet Piece NG 1 - 3 20%
Sealed Dynasty Circlet Piece Sealed Dynasty Circlet Piece NG 1 - 3 20%
Sealed Dynasty Shield Piece Sealed Dynasty Shield Piece NG 2 - 3 20%
Sealed Dynasty Sigil Piece Sealed Dynasty Sigil Piece NG 2 - 3 20%
Group chance: 100%
Sealed Dynasty Gauntlets Piece Sealed Dynasty Gauntlets Piece NG 2 - 3 16.67%
Sealed Dynasty Boot Piece Sealed Dynasty Boot Piece NG 2 - 3 16.67%
Sealed Dynasty Leather Gloves Piece Sealed Dynasty Leather Gloves Piece NG 2 - 3 16.66%
Sealed Dynasty Leather Boots Piece Sealed Dynasty Leather Boots Piece NG 2 - 3 16.66%
Sealed Dynasty Gloves Piece Sealed Dynasty Gloves Piece NG 2 - 3 16.67%
Sealed Dynasty Shoes Piece Sealed Dynasty Shoes Piece NG 2 - 3 16.67%
Group chance: 100%
Sealed Dynasty Breast Plate Piece Sealed Dynasty Breast Plate Piece NG 1 - 2 16.67%
Sealed Dynasty Gaiters Piece Sealed Dynasty Gaiters Piece NG 1 - 2 16.67%
Sealed Dynasty Leather Armor Piece Sealed Dynasty Leather Armor Piece NG 1 - 2 16.66%
Sealed Dynasty Leather Leggings Piece Sealed Dynasty Leather Leggings Piece NG 1 - 2 16.66%
Sealed Dynasty Tunic Piece Sealed Dynasty Tunic Piece NG 1 - 2 16.67%
Sealed Dynasty Stocking Piece Sealed Dynasty Stocking Piece NG 1 - 2 16.67%
Group chance: 3%
Sealed Dynasty Necklace Sealed Dynasty Necklace S 1 25%
Sealed Dynasty Earring Sealed Dynasty Earring S 1 34%
Sealed Dynasty Ring Sealed Dynasty Ring S 1 41%
Group chance: 100%
Sealed Dynasty Necklace Gemstone Sealed Dynasty Necklace Gemstone NG 2 - 5 25%
Sealed Dynasty Earring Gemstone Sealed Dynasty Earring Gemstone NG 3 - 7 34%
Sealed Dynasty Ring Gemstone Sealed Dynasty Ring Gemstone NG 4 - 8 41%
Group chance: 20%
Blessed Scroll: Enchant Weapon (S-Grade) Blessed Scroll: Enchant Weapon (S-Grade) NG 1 25%
Blessed Scroll: Enchant Armor (S-Grade) Blessed Scroll: Enchant Armor (S-Grade) NG 1 - 2 75%
Group chance: 0.25%
MasterWork Crystal: A-grade MasterWork Crystal: A-grade NG 1 100%
Group chance: 0.25%
MasterWork Crystal: S-grade MasterWork Crystal: S-grade S/ Dynasty NG 1 100%
Group chance: 0.25%
MasterWork Crystal: S80-grade MasterWork Crystal: S80-grade Moirai NG 1 100%
Group chance: 0.15%
MasterWork Crystal: S84-grade MasterWork Crystal: S84-grade Vesper NG 1 100%
Group chance: 100%
Enchanted MW Box Enchanted MW Box NG 2 - 8 100%
Group chance: 100%
Chest with Life Stone Chest with Life Stone NG 3 - 15 100%
Group chance: 100%
Attributes Supplies Attributes Supplies Stones & Crystals NG 3 - 5 100%
Group chance: 3.5%
Forgotten Scroll: Protection of Elemental Forgotten Scroll: Protection of Elemental NG 1 50%
Forgotten Scroll: Protection of Alignment Forgotten Scroll: Protection of Alignment NG 1 50%
Group chance: 5%
Forgotten Scroll: Fighter's Will Forgotten Scroll: Fighter's Will NG 1 33.33%
Forgotten Scroll: Archer's Will Forgotten Scroll: Archer's Will NG 1 33.34%
Forgotten Scroll: Magician's Will Forgotten Scroll: Magician's Will NG 1 33.33%

Improved jewelry

The parameters of Ring of Core Ring of Core C can be improved. For more information on how to get Enchanted Ring of Core Enchanted Ring of Core B and Refined Ring of Core Refined Ring of Core A , read the article Pona: Jewelry Upgrade.

Pay attention!

The magical protection of Core jewelry changes as the season progresses. The information in this article is current for the end of the season and the Eternal server.

Ring of Core Ring of Core C M. Def. 60
Max MP +21
Poison Resistance +20%
Poison Chance +20%
Accuracy +1
Speed +1.
Enchanted Ring of Core Enchanted Ring of Core B M. Def. 65
STR +1, INT +1
P. Crit. Rate +15
Resistance to Poison +30%
Poison Chance +30%
Accuracy +2
Speed +2.
Refined Ring of Core Refined Ring of Core A M. Def. 70
STR +2, INT +2
P. Crit. Rate +30
Resistance to Poison +40%
Poison Chance +40%
Accuracy +4
Speed +4.
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