Main article: Bosses
The Destroyer is the Hardmode version of the Eater of Worlds, with 80,000 HP (120,000 in Expert Mode). It is considered the easiest Hardmode boss by many players, despite having the second-highest health. Although it is similar to its pre-Hardmode counterpart, the Eater of Worlds, it has some key differences: it won’t divide into smaller segments, will shoot lasers from its body if space is available, and will deploy Probes to attack.
The Destroyer is summoned by crafting and using a Mechanical Worm anywhere, but can only be spawned at night. The Destroyer will shoot Death Lasers, increasing in attack speed as it loses HP. Weapons that do damage to multiple segments like Flails, Water Bolt, and the Demon Scythe are recommended, because they will hit multiple sections of The Destroyer at once.
In Expert Mode, The Destroyer shoots rapidly at the player when they have less than half of their maximum HP. The head of The Destroyer can also deal damage as high as 280, crippling the player if they are hit head-on.