Wall of Steel-0

Wall of Steel

The Wall of Steel is the hardmode version of the Wall Of Flesh, and a boss that can be spawned in the Underworld by letting a Mechanic Voodoo Doll fall into lava after Hardmode has been unlocked. It is a stronger, mechanical version of the Wall of Flesh. Once the doll has fallen into lava, the Mechanic will die, and the Wall of Steel will awaken.


  • 80,000/85,000Heart (each eye)
  • 60,000/145,000 Heart (mouth)
  • 100,000/225,000 Heart (Body)
  • 200,000/455,000 Heart (Full)
  • 104/215 Damage
  • 60/124 Damage (laser)
  • 600 Damage (when trying to exit the underworld)
  • 100% KB resistance


Like the Wall of Flesh, the Wall of Steel has a mouth and two eyes, the eyes representing the Twins and the mouth representing the Destroyer. The mouth spawns out Elite Probes every 12 seconds as a replacement to The Hungry II and Skeletron Prime arms that function the same way as the boss as a replacement to The Hungry. The eyes must be shot at first. Once they die, Probes and Prime Arms will stop spawning out of the mouth. Before the eyes' death, the rest of the body is indestructible. When the eyes die, the mouth will start breathing fire at the player. The rest of the body will be covered with spines that inflict damage to any plebian that attacks it with a melee attack. Once the mouth dies, the entire body will begin moving faster and also be open to attack. Once the body is destroyed, the drops from the Wall of Steel will spawn inside a square of Demonite/Crimtane Bricks.

After the defeat of the Wall of Steel, it will drop 4 Flags. Once you use one, a message will appear saying "The ancient spirits of light and dark have come to wage war!" This marks the beginning of War Mode. Three types of ore will also spawn: Cryocite Ore in the Snow biome, Verdantite Ore in the Jungle and Aridite Ore in the Desert.

Alternatively, the Player Voodoo Doll can be used instead of the 4 Flags to initiate Nightmare Mode. Cryocite, Verdantite, and Aridite ore are still available if the player decides to do this instead.

There is also a 2nd alternative progression way: Throwing The Doomer Brick into lava, instead of using the Player Voodoo Doll or Flags to summon the Wall of Steel MK-II. Once defeated, Extreme Mode will start. PLEASE NOTE THAT CRYOCITE, VERDANTITE AND ARIDITE WILL NOT BE AVAILABLE IF YOU CHOSE THIS PROGRESSION WAY.


Only one of the following will drop

Only drops in Expert Mode

Community content is available under CC-BY-SA unless otherwise noted.