Fargo's Mod/Echdeath

Echdeath is a secret joke, purposefully designed to be unbeatable by any means. It is only available with the Fargo's Soul Mod DLC installed.

Summoning
Echdeath does not spawn on its own and can be spawned if the player uses Pandora's Box under the following set of very specific conditions:


 * The player is in front of an Ech Painting and unsafe Lihzahrd Brick Walls
 * The player is standing on top of Luminite Bricks
 * The player is simultaneously pressing the up and down keys while not pressing the left or right keys
 * It is a Solar Eclipse
 * The current moon phase is a Full Moon
 * A Dungeon Guardian is currently alive.

Attacks
When spawned, Echdeath will immediately begin floating towards the player in an attempt to ram into them. As it chases the player, it will gradually increase in both speed and size as its "biting" animation plays faster and faster, making it fundamentally impossible to escape it.

On contact, Echdeath inflicts an absolutely massive amount of damage that ignores all forms of invincibility and godmode, invariably killing the player and everything else that stands in its way in a single blow while broadcasting the message ":echdeath:" in the chat. Regardless of what difficulty the character is on, any player killed by Echdeath will become a ghost as if they were on Hardcore difficulty. They will be unable to respawn until they exit the world, although their character will not be deleted.

If Echdeath is reduced to 1 HP, it will enter an enraged state, signified by the message "Echdeath has enraged." in the chat. This enraged state fully restores its HP, causes the screen to start shaking uncontrollably, significantly increases its speed, causes Echdeath to gain functionally infinite damage reduction, and lets it instantly destroy any tiles it comes into contact with.

Trivia

 * While the boss is alive, Red Steel by Sakuzyo will play, which also plays during the fight with the Mutant.
 * The boss' sprite and name are derived from the emote of the same name on the Fargo's Mod Discord server.
 * Due to its incredibly high HP and defense, as well as its constantly increasing speed and size, it is impossible to kill Echdeath before it kills the player. Even normally instant-kill attacks, such as instakills provided by cheats, will deal minimal damage to the boss.
 * If enraged Echdeath is somehow slain (by means of cheats from other mods that can kill enemies regardless of stats), the message "HOW" will be broadcast in chat and it will drop its loot. However, anything that "deletes" the boss instead of killing it will cause it to vanish without dropping anything.
 * Its health, damage, and defense stats are the signed 32-bit integer limit divided by 10.