The Destroyer

The Destroyer is a harder version of the Eater Of Worlds that was added in the 1.1 update. It has a total of 80,000 health altogether and is made of metal, just like Skeletron Prime's head and hands. It drops Coins and Souls of Might (Around 20-30 (Though 30 is very rare)). The Destroyer sends out small flying enemies called Probes that shoots lasers.

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The Destroyer does not break when being fought but instead dies as one whole entity, the red orbs (seen on the picture on the left) pop out from The Destroyer during the fight as it loses HP.

Tips

 * It's advised to use weapons that can pierce through multiple targets, such as unholy arrows, jester arrows, flamethower, or just a sword; Holy arrows are also effective, as the stars summoned can pass through targets as well, and joined with the star cape, spamming probes down should be easy. Flamethower is effective because it does damage realy fast and it passes at least trought 3 segments per shot. The Magical Harp is extemely efficient against this boss.
 * The boss is immune to debuffs such as fire and cursed fire, but it's probes aren't, using cursed spells or arrows/bullets will make short work of probes while saving ammunition.
 * Much like it's lesser form, it's not very effective when faced with players on platforms. Making platforms with 15 spaces in between each will ensure the boss itself doesn't reach the player, however it's lazers can still shoot you, and be sure to give yourself plenty of running space, about 80 feet wide.
 * For single player: Adamantite or hallowed armor, at least 3 potions per each kind that increase your stats or help you fight (Ironskin potion, thorn potion, gravitation potion, hunters potion, swiftness potion, shinepotion, night owl potion), 1500 Gel, flamethower, philosophers stone and 20 greater healing potions. For really advanced players no arena required.
 * Destroyers probes are useful for healing so watch out for hearts they drop. (100% chance of droping the heart)
 * An arena that has several small rooms can prevent The Destroyer from firing hitting lazers at you, effectively reducing taken damage, however you must still avoid the rest of The Destroyer's body aswell.
 * Another method is to build a room/arena out out skeletrons castle bricks.Then buy as much explosives as possible and throw grenades TNT bombs