Igneous the Molten Mass

Igneous the Molten Mass is a slime boss found in a Molten Quarry far from The Core, around 650 tiles away. The quarry is much larger than ordinary quarries, and Igneous can be located with an Igneous the Molten Mass Scanner. When nearby, a heavy thumping sound can be heard and the screen begins to shake, making the boss easier to detect before it is fully revealed.

Igneous begins combat cautiously: at full health it will only attack players within 6 tiles, but once damaged its detection range expands to 20 tiles. Its main attack is a rapid leap toward the closest player, damaging anything at the landing point and leaving behind Ground Magma Slime. This leap also destroys any non-indestructible objects in its path, including walls, and it will fill pits or liquids with Lava Rock Block ground as it moves through them.

Every 5–7 seconds, Igneous pauses to use one of two special attacks. It can spew fireballs at the nearest player, dealing moderate damage and inflicting burn, or it can spawn several magma blobs nearby. These blobs slowly move toward Igneous and heal it for 10% health if they make contact, but they can be destroyed in a single hit. The number of blobs increases with each player in the world and also when Igneous is enraged. At 50% health, Igneous becomes enraged, moving much faster and becoming more dangerous overall.

If all players move too far away during the fight, or if Igneous travels more than 25 tiles from its rune, it retreats to the rune and regenerates health at a rate of 10% of its maximum every 5 seconds. Once defeated, it can be summoned again by placing a Giant Slime Summoning Idol on the rune below its original spawn point.

• Igneous leaves behind Ground Magma Slime while moving, so fighting on open terrain helps reduce how much of the arena becomes hazardous.
• The fireballs and slime trail both apply burn, making cooked food made from fish caught in the Molten Quarry especially useful for surviving the fight.
• The healing magma blobs are easiest to handle with a fast-attacking ranged weapon, such as the Galaxite Chakram.
• Like other slime bosses, Igneous can be fought effectively with a shield by timing parries against its leaping attacks.
• Good armor and quick access to strong health potions make it much easier to absorb mistakes and continue the fight without constant dodging.