Guide:Mod progression

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This guide is intended to give a rough progression outline through the Calamity Mod. The mod adds several new points of progression and makes several changes to the base game's mechanics, which will be mentioned throughout this guide.


Getting Started


Pre-boss exploration

  • Aside from mining for Ores, Wulfrum Metal Scraps and Energy Cores are the first materials the player should look for to create armor, weapons, and useful tools to facilitate early-game exploring.
  • All Biomes and the majority of Events have unique content added to each of them, so be sure to check through them for items that may be useful.
  • Several new structures spawn across the world:
    • Planetoids spawn in Space, providing items that were otherwise available only in the Caverns. These structures can benefit the player greatly, especially if explored early.
      • The main Planetoid contains the Space Arsenal Lab that contains Cinderplate and chests with Herb Bags, Planter Boxes, Dubious Plating and Mysterious Circuitry. This allows the player to set up an early herb farm.
      • Ore planetoids can be generated, providing the player with a large amount of a random ore, which is useful for early crafting.
      • Biome planetoids can be useful for obtaining items before exploring their respective biomes, most notably Bezoars, Sharpening Stations, and Glowing Mushrooms.
      • Life Crystal planetoids are guaranteed to generate with a Life Crystal inside of them and typically contain a vein of Amethyst or Topaz.
        • These planetoids will allow the player to obtain a large amount of Life Crystals early, helping them to increase their maximum life very quickly.
    • Shrines appear in different biomes, each with a unique accessory or mount for the player.
    • An Evil Island spawns in the sky above either the Dungeon or the Jungle, comprised of blocks and ore from the World Evil that is opposite to the one chosen during world generation, as well as its Biome Chest.
  • Certain enemies drop vanilla items for convenience:
    • Crawlers can be found in the Underground and Cavern layers, dropping their respective gems.
    • A complete list containing all the other available items may be found here.
  • NPCs also sell new items, including their dropped weapon if they have one.
  • Blood Moon enemies drop Blood Orbs, which are a universal material for crafting potions, but require the Alchemy Table from the Dungeon in order to be used.


  • The mod also adds a new Rogue class, which utilizes a unique stealth mechanic to deal extra damage.
  • Several items, as well as modifiers, have been rebalanced throughout progression.
  • All other changed mechanics can be referred to here.

Early boss progression

Late boss progression

  • The next goal of the player should be to fight Skeletron and visit the Dungeon.
    • The Bandit NPC can now spawn, selling various Rogue weapons and accessories.
      • The Bandit also provides a refund service that returns a fraction of the money the player has spent at the Goblin Tinkerer on reforging.
  • After rescuing the Mechanic, the player can buy Wire to craft the second Codebreaker component, the Decryption Computer which decodes the Encrypted Schematic (Planetoid) and unlocks various early-Hardmode weapons.
  • The Abyss is a large biome that replaces the Ocean on the Dungeon-side of the world. While optional, it contains valuable loot that will be useful against the next pair of bosses.
    • The player should build a house with a bed near the area for the sake of convenience, or use a Magic Conch to instantly teleport to either side of the world.
    • The entrance to the biome is located at the very bottom of the Sulphurous Sea.
    • Due to the constant breath loss and difficulty to see, the player is recommended to bring Light Pets to reduce the darkness in the Abyss and items to facilitate exploring in water, such as the Arctic Diving Gear and Gills Potions.
    • The Ancient Treasure Chests will be opened once Skeletron is defeated, each containing several weapons, accessories, and other helpful tools.
      • Equipping the accessories found in these Ancient Treasure Chests is recommended, as they will make further exploration a lot easier, such as the Iron Boots and the Depths Charm.
    • Entering the deeper parts is not recommended due to the multiple powerful enemies that may spawn in the area.
  • The player can attempt to explore the Brimstone Crag at this point, though they should be wary of the powerful enemies that spawn in this biome.
  • Afterwards, the player can challenge The Slime God.
    • While this boss can be skipped and fought later, the loot and the crafted Statigel set is valuable in the upcoming fight against the Wall of Flesh.
    • The boss also drops the Electrolyte Gel Pack in Revengeance Mode, which increases the damage of Adrenaline Mode by 15% and increases how much damage reduction the player gains when hit while the meter is full by 5%.
  • The last step is to prepare for and defeat the Wall of Flesh, then enter Hardmode.
    • Aside from new weapons, the boss also drops a Rogue Emblem for the rogue class.


Early-Hardmode boss progression

  • Three new bosses become available: Cryogen, Aquatic Scourge and Brimstone Elemental. The three are intended to be fought between each Mechanical Boss fight. These bosses are not required for progression, but the gear they drop and unlock can aid the upcoming fights. Note that the Brimstone Elemental requires the defeat of one mechanical boss.
    • Defeating Cryogen spawns Cryonic Ore in the Ice biome for the Daedalus set. Note that an Adamantite or Titanium Pickaxe is needed to mine the ore, requiring the defeat of 2 mechanical bosses.
      • The Archmage NPC also spawns and sells various items and weapons.
    • Defeating Aquatic Scourge unlocks the second tier of the Acid Rain.
      • This tier unlocks new weapons for the player to aid in the upcoming fights.
    • The second tier of the Old One's Army may also be fought, as the Sentry accessories are recommended for Summoners.
  • The player may optionally fight the Queen Slime at this point, which drops several useful items as well as the Hallowed Key and Souls of Light.
  • If the early Hardmode progression rework is enabled, Mechanical Bosses will no longer drop Hallowed Bars at first and defeating Mechanical Bosses will cause various ores to spawn in the world.
    • Mythril Ore and Orichalcum Ore will spawn upon the defeat of the first Mechanical Boss, allowing the player to craft a Mythril or Orichalcum Anvil.
    • Adamantite Ore and Titanium Ore will spawn upon the defeat of the second Mechanical Boss.
    • Hallowed Ore will spawn in the underground Hallow following the defeat of the final Mechanical Boss, and all Mechanical Bosses will drop Hallowed Bars from that point onward.
  • As soon as Mythril or Orichalcum Bars are available, the next Codebreaker component, the Long Ranged Sensor Array, can be crafted to decrypt the Encrypted Schematic (Jungle).
  • The souls dropped by the Mechanical Bosses along with Mythril or Orichalcum Bars can be used to craft the weapons from the Planetoid Schematic.
  • The Blood Orange may be crafted following the defeat of the 3 Mechanical Bosses. When consumed, it permanently increases the player's life by 25.
  • After all six bosses have been defeated, the player is recommended to fight either Calamitas Clone or Plantera.
  • After defeating Calamitas Clone, Solar Veils will drop from certain enemies during a Solar Eclipse and the middle area of the Abyss may now be explored, in order to hunt for Depth Cells, Lumenyl, and dig for Planty Mush.
    • The player must be very careful within this area of the Abyss, as enemies can very easily overpower them, and the lack of significant lighting can make escaping the Abyss difficult under pressure.
    • The materials here are used in gear both now and later on.
    • As the breath loss increases as the player goes deeper into the Abyss, accessories such as the Abyssal Diving Gear and the Aquatic Emblem are highly recommended from this point onward.

Post-Plantera boss progression

Post-Moon Lord

Post-Providence, the Profaned Goddess

  • Uelibloom Ore is now available, allowing the Player to obtain Tarragon armor.
  • The items in the Underworld Schematic can now be crafted, including the next Codebreaker component, the Voltage Regulation System, which allows the decryption of the final schematic, Encrypted Schematic (Ice).
  • An Elderberry can now be crafted which further again increases the player's max life by 25.
  • Ravager, as well as enemies in the Brimstone Crag, become buffed and will now drop Bloodstone, allowing the player to create some of the items in the Bloodstone set.
  • Providence will drop the Rune of Kos, which is used to fight the three Sentinels of the Devourer.
  • Polterghast is now recommended to be fought, and upon its death, the abyssal mini-bosses will now drop new items, allowing the player to obtain several powerful weapons and accessories.
    • After defeating Polterghast, the player can fight the 3rd tier of Acid Rain and challenge The Old Duke.
    • Polterghast will drop the final Adrenaline upgrade in Revengeance Mode, the Ectoheart, which increases the damage of Adrenaline Mode by 15% and increases how much damage reduction the player gains when hit while the meter is full by 5%.
    • Polterghast will also drop Ruinous Souls, which is used to craft Bloodflare armor, Omega Blue armor, several additional weapons, and the Phantom Heart, which is the final mana upgrade.
  • The player can find the Terminus item at the bottom of the Abyss, which starts the Boss Rush event, although it is recommended that this be challenged once Supreme Witch, Calamitas and the Exo Mechs have been defeated.
  • Upon defeating all three Sentinels of the Devourer, the Cosmic Worm can now be crafted, which is used to summon The Devourer of Gods.

Post-The Devourer of Gods

  • After defeating The Devourer of Gods, many things will happen:
  • The player can now use the Ascendant Spirit Essence to craft Omega Healing Potions.
  • Now, Yharon, Dragon of Rebirth should be challenged.

Post-Yharon, Dragon of Rebirth

Post-Supreme Witch, Calamitas/Exo Mechs

  • The Brimstone Witch NPC can spawn once Supreme Witch, Calamitas is defeated. She can enchant the player's weapons to give them new and powerful effects.
  • Upon defeating the Exo Mechs, Exo Prisms will be dropped and Miracle Matter can be crafted, allowing the to player combine the Ancient Manipulator, Cosmic Anvil, Hardmode Forge, and Tinkerer's Workshop to obtain Draedon's Forge and craft several Exo-Weapons.
  • Materials dropped by both Supreme Witch, Calamitas and the Exo Mechs allow for Shadowspec Bars to be crafted, used to craft endgame-tier items, allowing the player to obtain Demonshade armor, it is at this point that the player should be strong enough to face off against the Boss Rush.
    • Upon defeating the Boss Rush, the player can obtain a special reward, with most playthroughs ending at this point.
  • While optional, the player can head to the Abyss and attempt to fight the Primordial Wyrm.

The Endgame

After the player defeats the Boss Rush (and optionally the Primordial Wyrm), they are in the endgame now. At this point, the player has several options of where to keep going, including playing other mods or starting over their adventure with the Calamity Mod as a different class.

Some things you can try:

  • Start a new playthrough in higher difficulty (Normal Mode < Expert Mode < Master Mode < Revengeance Mode < Death Mode), and Infernum Mode, which is a community mod maintained by Dominic Karma that increases the difficulty of the game.
  • Change the health of bosses in the mod's config.
  • Attempt no-hitting all bosses in Revengeance Mode or Death Mode.
  • Complete all Angler fishing quests added by the Calamity Mod.
  • Construct buildings or settings from the Lore such as the Sea Kingdom or the Archmage's castle.
  • Try to beat Revengeance Mode or Death Mode without rage or Adrenaline.
  • Beat multiple bosses at once.
  • Learn speedrunning.
  • Create pixel art of content added by the Calamity Mod.
  • Acquire every single weapon and tool.
  • Obtain every single armor and vanity set.
  • Gather up every single accessory.
  • Collect every single Trophy, Boss Mask and Banner.
  • Collect every Relic if playing on Master Mode or Revengeance Mode.
  • Gather up every single Music Box.
  • Mine out every single ore that the Calamity Mod adds.
  • Suggest ideas in the Calamity Mod Discord.
  • Find bugs and glitches so the mod developers can fix them for everyone's benefit.
  • Create a wardrobe of different costumes that resemble certain characters.
  • Dig out every single block in a world.
  • Prepare for future updates.
  • Contribute to the Wiki!

The Calamity Mod is an ever-changing project, with more content to come in the future for both the current progression of the Mod and beyond Supreme Witch, Calamitas. The player can prepare themselves for when the mod updates to add bosses and/or events such as Yharim himself.

See Also