Terraria: Calamity Mod (2016)

The Calamity Mod is a large content mod for Terraria which adds many hours of endgame content and dozens of enemies and bosses dispersed throughout the vanilla game's progression. The Calamity Mod also features several harder difficulty modes, five new biomes and new structures, a new class, a new leveling mechanic, more than thirty new songs, over fifty recipes for previously uncraftable vanilla items and other assorted changes to vanilla gameplay.

Terraria - Calamity Mod Progression Guide

Calamity Mod/Calamity Mod for Terraria 1.4.4.9

PC Gamer on X: The best Terraria mods

Terrarie Calamity - Colaboratory

Terraria: Calamity Mod (2016)

Terraria Calamity Mod The Four Catastrophes by NeoXZenith76 on

GURGAMOTH Gameplay Trailer video - Mod DB

Terraria: Calamity Mod (2016)

Replying to @Enter Nickname this took me a while but heres the ost

An Introduction to Calamity Mod