1) It has 8000 HP
2) Wall of Flesh drops "pwnhammer" and 1 of 6 items( "Breaker Blade","Clockwork Assault Rifle","Laser Rifle" and also "Ranger Emblem","Warrior Emblem",Sorcerer Emblem"... and all those weapons have 16.67% chanse to be droped)
3)WoF has 12def. points(mouth) and 0def.points(eyes)
4)Wall of Flesh has 50 melee damage it's attack increases when it's health decreases
5)When HP% of WoF decreases it also starts to move faster, and faster.

Then you come to hell, there are many lava,monsters,buildings, and other stuff... But we will need to change landscape :)

1)We need to make "Hellevator*"
*(Hellevator is an elevator from surface to hell)

2)We need to make long road in hell to create a battlefield (road must be not shorter than 500 blocks)

Everything is ready and we need to check our inventory
1)Armor: Meteor Leggins, Meteor Suit, Meteor Helmet.
2)Weapons: Water Bolt, Space Gun,Muramasa,Vilethorn.
3)Potions: Water Walking Potion,Magic Power Potion,Mana Regeneration
Potion, Ironskin Potion, 30 Lesser healing potion,40 lesser mana potion. (all potions 2X!)
4)Accessories: Spectre Boots, Cloud in a Balloon,Band of Starpower,Band of Regeniretion,Mana Flower.
5)HP and MP points: HP 300~400 MP 200.
6)Tools:War Axe of the Night, The Breaker,Nightmare Pickaxe.
7)Useful items: Guide Voodoo Doll and a Grapling hook.
Finaly everything is ready and we can start the "party":D

1)you need to summon the Wall of Flesh (drop Voodoo Doll in lava at the end of our "hellbridge"
2)You see the Wall of Flesh
3)Press "B" button to take all of you potions at the same time
4)Walk backwards and use Water Bolt to shoot WoF in the eyes ( because as it was mentioned before the eyes have no defense)

5)If your health is low press "H"
6)Thanks to our Mana Flower ( it will give mana potions when we need it )
8)Enjoy the battle
9)Finally it's a victory
10)Congratulation and welcome to Hard Mode :D

If you like that guide plz leave a comment