Leviathan and Anahita [Terraria][Calamity][Revengeance][Master][Melee]

In Terraria (v1.4.3.6), when playing with the Calamity Mod, Leviathan and Anahita are an optional boss duo; however, it is recommended to defeat them, because it is fun and a challenge, but also because they provide some good accessories, such as the Community, the Bottomless Water Bucket (for making arenas), and the Hotline Fishing Hook (for fishing in lava).

Two to three levels of long platforms with campfires, sunflowers, candles, and heart lanterns can provide enough buffs and working room to attack and dodge. The Vampire Throwing Knives and Brimlash both work fairly well, but I prefer the Throwing Knives because of their strong healing boost. The Chlorophyte armor and a summon can be used to deal with the minions; however, switching to Tyrant Yharim's Ultrasword can also help with its homing projectiles.

Armor & Accessories (Optimized for Defense and then Damage)

* Chlorophye Mask (melee)
* Chlorophye Breastplate
* Chlorophye Leggings

* Menacing Warrior Emblem
* Menacing Bee Wings
* Menacing Shield of Cthulhu
* Menacing Amalgamated Brain
* Menacing Ankh Shield
* Menacing Bloody Worm Scarf
* Menacing Terraspark Boots

Weapon & Potions:

* Godly Vampire Knives

* Hamburger
* Flask of Fire
* Flask of Ichor
* Flask of Poison
* Flask of Brimstone
* Flask of Crumbling
* Fabsol's Vodka
* Regeneration Potion
* Swiftness Potion
* Ironskin Potion
* Thorns Potion
* Heart Reach Potion
* Titan Potion
* Lifeforce Potion
* Endurance Potion
* Rage Potion
* Inferno Potion
* Wrath Potion

The Drunk Princess' candles, Sunflowers, heart lanterns, cake, and sharpening station all provide arena buffs too, while a heart statue on a 1-second timer can provided some much needed relief.

For more details on the boss, please see:

https://calamitymod.wiki.gg/wiki/Levi...