Wall of Flesh

The Wall of Flesh is a Boss located in The Underworld. It is the final and most difficult Boss in Pre-Hardmode. Beating it will trigger Hardmode.

To defeat the Wall of Flesh, you must attack its eyes or its mouth. They all share the same life counter, so shooting at any of the three will deplete the boss' total health. Shooting at the eyes causes the most damage, as they have the lowest defense. Its other body parts are transparent to weapons, so attacking those will not deplete its health.

Summoning
The Wall of Flesh is summoned when a Guide Voodoo Doll is dropped into lava in The Underworld while the Guide is alive (this must be done in The Underworld; lava in any other layer will not work). This kills the Guide and summons the boss. It can be done either by killing the Voodoo Demon that carries the Doll while it flies above a lava pool, or by picking up the dropped Doll and throwing it into the lava yourself. In the mobile version, you can either throw it into lava OR tap it in your hotbar.

If the Guide is not alive when the Doll is destroyed, the Wall of Flesh will not spawn, and the Doll will be wasted. If you have already summoned the Wall of Flesh recently, make sure the Guide has respawned before attempting to summon the Wall again. On the PC and console versions, one can use the housing menu to see which NPCs are still alive.

The Wall of Flesh's sweep direction is determined by its spawn location. Spawning it anywhere left of the center of the world will cause it to sweep from left to right, while spawning it right of center will cause it to sweep right to left. Maximum fight space can be achieved by spawning it at the extreme right or left of the world, though these areas have fewer natural structures and may require additional lava survival gear or construction.

Attacks
The Wall of Flesh is very large, occupying the entire screen vertically. Once spawned, it steadily sweeps across the map in a single direction, forcing the player to constantly move away for the duration of the fight while contending with the Underworld's usual hazards. The Wall moves faster as it gets more wounded. It must be killed before it reaches the end of the map, otherwise it will despawn and all living players in the underworld will die (with the unique death message " was Licked").

Keep this behavior in mind when preparing an Arena, as the fight will take you many screens away (unless you are already using Hardmode gear). Any platform you build will need to be very long (ie. tile length reaching in the thousands).


 * The Wall has small mouths called The Hungry, each attached by a long vein, which move towards and damage players. As the Wall of Flesh's main body takes damage, they deal more damage and become more resistant to attacks. When they've suffered enough damage, they detach and chase players.
 * The Wall's eyes fire lasers. As its health decreases, the lasers increase in damage, speed, and frequency.
 * The Wall burps Leeches from its mouth that chase players.

Immediately upon the Wall of Flesh's spawning, the player is afflicted with the Horrified debuff, which prevents fleeing from the battle. Players that attempt to leave the Underworld or get behind the Wall of Flesh are grabbed by The Tongue and pulled directly into the Wall of Flesh's mouth, inflicting serious damage. If the player teleports beyond the reach of the tongue by using a Magic Mirror, Recall Potion or other means of quick transport, the debuff instead kills them immediately, returning the message “ tried to escape”.

Aftermath
When the Wall of Flesh is killed, it leaves its drops in a floating, fully enclosed box of Demonite Bricks to prevent its drops from falling into lava. One of the drops is always the Pwnhammer, which becomes an essential tool.

After defeating the Wall for the first time, your world will enter Hardmode, and will be filled with tougher enemies. This will also generate two diagonal stripes of The Hallow, and Corruption or Crimson, in a "V" pattern from the center of the Underworld all the way to the Surface (and higher, as Floating Islands in these paths will also be converted).

Note: See Hardmode for more extensive information.

Tips

 * Target the eyes rather than the mouth, since the eyes have 0 defense.
 * You can also target the mouth, because it is safer due to the fact that the eyes shoot lasers, and getting close to the eyes can heavily damage you.
 * Mobility-enhancing items, such as Gravitation Potion, Rocket Boots and various Hooks can make traversing the underworld much easier. Similarly, items like Obsidian Skin Potions and Lava Waders can mitigate the underworld's ambient hazards.
 * You may want to make a backup of your world in case you discover that you weren't ready for Hardmode yet.
 * The Wall of Flesh attempts to cover the entire Underworld cavern space by moving its eyes up and down; it orients by existence/absence of Ash blocks 4-5 tiles above and beneath the eyes. That means making a bridge out of ash will make the eyes stay at constant height 4-7 blocks from the bridge.
 * Water Walking Potion, Lava Waders, Rocket Boots/Spectre Boots, or Obsidian Skin Potion are of great help in mitigating the Underworld's many lava pools.

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