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This guide explains how to summon The Twins in Terraria, detailing the steps for crafting and using the Mechanical Eye, as well as the conditions for their natural spawn. Each method outlines the required materials, nighttime conditions, and instructions to initiate this challenging boss fight.
The Twins are a Hardmode mechanical boss in Terraria, serving as an upgraded counterpart to the Eye of Cthulhu. They consist of two distinct entities: Retinazer, which uses laser-based attacks, and Spazmatism, which employs a flamethrower. Together, they offer one of the most challenging fights in Terraria's early Hardmode stage, testing both mobility and combat skills.
Notable Drops:
This is the primary method to summon The Twins. The Mechanical Eye is a Hardmode summoning item crafted using materials found after defeating the Wall of Flesh.
Craft the Mechanical Eye at a Mythril or Orichalcum Anvil and use it at night. Note, that the item cannot be used during the day, and summoning will fail if attempted outside nighttime.
The Twins may also spawn naturally with a 1/10 (10%) chance at dusk after a Demon or Crimson Altar has been destroyed, provided they have not yet been defeated at least once in the current world.
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