Wall of Flesh

. The Wall of Flesh (WOF) is a boss located in The Underworld. To summon it, a Guide Voodoo Doll must be thrown into the lava. The Wall of Flesh will not spawn if the Guide is already dead. When the battle begins, all players will have the Horrified debuff. This debuff lasts until the Wall of Flesh is killed or despawns.

After defeating this boss, your world will enter hardmode and you'll be facing tougher enemies. This will also spawn the hallow somewhere,usually near your original spawn point.(If you hack Hallowed blocks or holy water into your inventory and place/use it to spead the Hallow before the WoF is defeated,the respective Hallow enemies will not spawn until the WoF is defeated)

The Wall of Flesh has several attacks. First of all, it has tiny mouths resembling Man Eaters that move towards and damage you. These are called The Hungry. He also has an attack where his eyes shoot lasers, with less health it shoots more lasers. Depending on where the doll was dropped, can appear on either side of The Underworld. Obsidian Skin and Gravitation potions are suggested to help you get by. The debuff, The Tongue, causes the Wall of Flesh to drag characters that attempt to escape, such as leaving the underworld or running behind it, to in front of its mouth. Using the Magic Mirror causes you to die, with the message " tried to escape. Note that if the Wall of Flesh kills you, you may not be able to spawn it again unless you exit Terraria and re-open it."

If you become trapped in between the boss and a wall, it will squeeze you through those blocks and send you flying. A type of grapple or the Gravitation buff is recommended for this scenario.

It summons Giant Worms out of its mouth and shoots lasers out of its eyes. It looks like it is made out of left over body parts including three fleshy Eye of Cthulhu, which is where many of its attacks appear to be based.

To destroy the Wall of Flesh you must attack its three eyes (the Mouth of the beast is considered an eye,thus followes the same AI as its eyes) other as they share the one life counter, so shooting at any of the three will deplete the Wall of Flesh's health. The wall of flesh (apart from the three eyes) is transparent to weapons, and shooting the Wall of Flesh there will not deplete its health. Unlike other bosses, this boss does not despawn if you die. It will remain alive until it crosses the edge of the map.

When the Wall of Flesh is killed, it leaves its drops in an enclosed box of Demonite Bricks. This way, the drops do not fall into lava. Even if they did in some way, being the level of item they are, they wouldn't melt.

A recommendation is if you have your own server invite friends to help you out with this boss, but it's possible to beat him without them.

Bug: The Wall of Flesh may grab you and give you "The Tongue" condition, but will never let go. It will continue to rise vertically, until it reaches the top of the map. From what I have seen, there is no way out of this. (Anybody want to switch this to an actual bug listing? I'm not sure how.)