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Mechdusa is a new boss in Terraria, introduced in the recent 1.4.4 update of the game. Although similar in name, this boss is different from the normal Medusa enemies that spawn when you have a Hardmode world within Marble Caves.

Related: Terraria: Overlooked Blocks You Need To Start Using

Mechdusa can be quite elusive, but we are here to help you summon and fight her. This will also include some helpful battle tips, as well as the rewards you can obtain from defeating Mechdusa. First, let's take a look at the spawn conditions for this mechanical boss.

Mechdusa Spawn Conditions

getfixedboi seed terraria
When generating this seed, text will appear backwards. 

Mechdusa is a unique boss that can only appear in the Everything Seed. To spawn this world, you will need to use the following seed.

  • getfixedboi

With this seed, you will have a combination of several different seed types. Most importantly, this is the only seed where Mechdusa can appear. In the Everything Seed, all three mechanical bosses appear, taking the new shape of Mechdusa.

Summoning Mechdusa

player fighting mechdusa
via schmuck/Steam

To summon Mechdusa, all you need to do is use Ocram's Razor. This item is exclusive to the Everything Seed, and can be crafted at a Mythril or Orchicalcum anvil with the following materials.

  • 1x Mechanical Skull
  • 1x Mechanical Eye
  • 1x Mechanical Worm

Each of these items will need to be crafted as well, so let's take a quick look at the crafting tree.

Item

How To Craft

Mechanical Skull

  • 30x Bone
  • 5x Iron Bar
  • 3x Soul of Light
  • 3x Soul of Night

Mechanical Eye

  • 3x Lens
  • 5x Iron Bar
  • 6x Soul of Light

Mechanical Worm

  • 6x Rotten Chunk or Vertebra
  • 5x Iron Bar
  • 6x Soul of Night

Typically, these items are used to summon the three mechanical bosses. In an Everything Seed world, these are unusable, with their only purpose being used to make Ocram's Razor.

Mechdusa also has a five percent chance to spawn at dusk if you have destroyed either a Demon or Crimson Alter. Additionally, this naturally spawning will only occur if at least one of the three bosses that it is composed of has not been defeated.

Battling Mechdusa

player fighting mechdusa
via vanilla/Steam

Once you use Ocram's Razor, Mechdusa will appear. This boss has the head of Skeletron Prime and the body of the Destroyer, with The Twins serving as eyes.

Because Mechdusa is made up of three bosses, they each have their own health. This means that you will need to destroy each part separately. Fortunately, the bosses keep their original mechanics that happen when you fight them normally.

Let's go over some tips to help you successfully take down Mechdusa.

Tips For Defeating Mechdusa

Terraria Armor Crafting

Overall, this can be quite a tough fight, so it's best to prepare and have tough armor, strong weapons, and plenty of potions. With a ranged weapon, you can deal damage while keeping a distance as well.

As mentioned above, Mechdusa's head is made out of Skeletron Prime. The head is attached to the other bosses, so try to defeat Skeletron Prime last. If you defeat this boss before the Twins, they will un-attach and move separately from the rest of the body. This will make the fight harder, as you need to focus on two separate pieces.

You can find tips on how to defeat every boss, including the mechanical bosses, in this guide!

Lastly, it's important to think about where you want to summon and fight Mechdusa. This is a large boss, and you definitely want to have plenty of room to battle. Like other bosses, we advise against summoning Mechdusa near your base area.

Rewards For Defeating Mechdusa

player riding in the mechanical car
via koko/Steam

Upon defeating each portion of Mechdusa, you will receive a treasure bag for the associated mechanical boss. This means that when you kill Mechdusa, you will get three times the amount of loot as just defeating a normal boss.

Below, you can check out the contents of all three treasure bags.

Treasure Bag

Contents

The Destroyer Bag

  • 1x Mechanical Wagon Piece
    • 100% chance
  • 25-40x Soul of Might
    • 100% chance
  • 20-35x Hallowed Bar
    • 100% chance
  • 12x Gold Coin
    • 100% chance
  • 1x Destroyer Mask
    • 14% chance

The Twins Bag

  • 1x Mechanical Wheel Piece
    • 100% chance
  • 25-40x Soul of Sight
    • 100% chance
  • 20-35x Hallowed Bar
    • 100% chance
  • 12x Gold Coin
    • 100% chance
  • 1x Twin Mask
    • 14% chance

Skeletron Prime Bag

  • 1x Mechanical Battery Piece
    • 100% chance
  • 25-40x Soul of Fright
    • 100% chance
  • 20-35x Hallowed Bar
    • 100% chance
  • 12x Gold Coin
    • 100% chance
  • 1x Skeletron Prime Mask
    • 14% chance

Overall, Mechdusa will drop a grand total of 36 gold, which is quite a lot. In addition to these three treasure bags, Mechdusa also has a 100 percent chance to drop the Waffle Iron. This is a unique pan-shaped item that creates waffle projectiles each time you swing. The Waffle iron had a base damage of 50, making it quite strong.

That's all there is to know about Mechdusa! You can summon this boss as often as you want, allowing you to farm treasure bags from the mechanical boss components.

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