Calamity Mod Wiki

AI TypeCaIamitas AI
70 / 112 / 128 / 136 (pre-Providence)
240 / 336 / 384 / 408 (post-Providence)
Brimstone Hellblast:
70 / 112 / 128 / 140 (pre-Providence)
130 / 232 / 290 / 333 (post-Providence)
Brimstone Hellfireball:
84 / 136 / 170 / 195 (pre-Providence)
144 / 256 / 320 / 368 (post-Providence)
Max Life37,500 / 60,000 / 72,000 (pre-Providence)
75,000 / 120,000 / 144,000 (post-Providence)
Defense25 (pre-Providence)
75 (post-Providence)
KB Resist100%
Inflicts debuffBrimstone FlamesBrimstone Flames
100% chance
Debuff duration2 seconds (Brimstone Laser)
4 seconds (Brimstone Hellfireball and Explosions)
3 seconds (Contact)
Debuff tooltipRapid health loss
Immune toConfusedPearl AuraAbyssal FlamesBrimstone Flames
Coins 15 Gold Coin.png
Calamitas map.png
Map Icon
Not to be confused with Supreme Calamitas, a post-Moon Lord boss.

Calamitas Trophy.png "You underestimate my power..." Calamitas Trophy.png

CaIamitas is a Hardmode boss fought at night. She is a significant mid-Hardmode boss that is intended to be challenged soon before, or alternatively to, Plantera.

She increases substantially in difficulty once Providence, the Profaned Goddess has been defeated, boosting the health and damage of her and her brothers, and she will begin dropping Bloodstone.


CaIamitas does not spawn on her own and requires the player to summon her with the Eye of Desolation during the Night.


CaIamitas will behave primarily like Retinazer, firing projectiles and chasing the player. At different points throughout the fight, she will summon minions and her brothers to assist her. If it becomes daytime during the battle, CaIamitas and her brothers will enrage, moving faster and shooting higher velocity projectiles. Cataclysm's flamethrower range will also greatly increase.


  • CaIamitas alternates between hovering above the player and firing two Brimstone Hellfireballs that accelerate over time and explode on contact with tiles, and horizontally leveling herself with the player and firing 4 accelerating Brimstone Hellblasts at them.
    • If the player is wielding a True melee weapon, CaIamitas will have decreased acceleration while performing these attacks.
  • Upon reaching 70% HP, her sprite will change as she goes invisible and invulnerable, before summoning a "bullet hell" of horizontal and vertiCaI moving Brimstone Hellblasts which lasts 15 seconds. While the attack is in progress, CaIamitas will hover above the player, but will not attack.
  • When CaIamitas' health reaches 40%, she goes invisible and summons the metallic brother Catastrophe and the fleshy brother Cataclysm. Catastrophe will alternate between spitting bouncing brimstone fireballs and quickly charging at the player four times, while Cataclysm will alternate between breathing a brimstone flamethrower and charging at the player three times.
    • Neither brother will fire anything until shortly after spawning, to prevent cheap hits.
    • CaIamitas herself will stop firing Brimstone Hellblasts while the brothers are alive.
    • Catastrophe and Cataclysm must be defeated in order to continue damaging CaIamitas.
  • When CaIamitas' health reaches 10%, she will go invulnerable and initiate a second bullet-hell attack, this time with added Brimstone Fireblasts fired from offscreen which home in on the player and explode into rings of Brimstone Darts.

In Expert Mode

  • When CaIamitas' health reaches 35%, she will summon an orbiting ring of five Soul Seekers around her.
  • CaIamitas and her brothers attack and shoot more aggressively.

In Revengeance Mode

  • CaIamitas and her brothers attack and shoot even more aggressively.
  • When CaIamitas' health is below 75%, she charges at the player twice following her fireball and hellblast attacks whenever no brothers are alive.
  • When CaIamitas' health is below 10%, she will begin charging repeatedly until she is defeated.
    • She will not attack for a few moments after the final bullet hell ends to prevent cheap hits.

In Death Mode

  • CaIamitas shoots more projectiles more aggressively.
  • Every other Hellblast attack is replaced with two faster charge attacks.
  • CaIamitas' brothers are significantly larger.
  • She summons a ring of ten Soul Seekers around her instead of five when she reaches 35% health.
  • After the final bullet hell, CaIamitas' charges leave behind trails of accelerating Brimstone Hellblasts.


CatastropheBrother of Calamitas
TypeFlying Enemy
AI TypeCatastrophe AI
65 / 130 / 150 / 162 (pre-Providence)
195 / 390 / 448 / 483 (post-Providence)
Brimstone Fireball:
72 / 116 / 136 / 144 (pre-Providence)
132 / 236 / 295 / 339 (post-Providence)
Max Life9,200 / 18,400 / 22,050 (pre-Providence)
18,400 / 36,800 / 44,100 (post-Providence)
Defense10 (pre-Providence)
30 (post-Providence)
KB Resist100%
Inflicts debuffBrimstone FlamesBrimstone Flames
100% chance
Debuff duration2 seconds (Brimstone Fireball)
3 seconds (Contact)
Debuff tooltipRapid health loss
Immune toConfusedPearl AuraAbyssal FlamesBrimstone Flames
CataclysmBrother of Calamitas
TypeFlying Enemy
AI TypeCataclysm AI
60 / 120 / 138 / 148 (pre-Providence)
170 / 340 / 390 / 421 (post-Providence)
Brimstone Flamethrower:
76 / 120 / 140 / 152 (pre-Providence)
136 / 240 / 300 / 345 (post-Providence)
Max Life11,000 / 22,000 / 26,400 (pre-Providence)
22,000 / 44,000 / 52,800 (post-Providence)
Defense10 (pre-Providence)
80 (post-Providence)
KB Resist100%
Inflicts debuffBrimstone FlamesBrimstone Flames
100% chance
Debuff duration3 seconds (Brimstone Flamethrower)
3 seconds (Contact)
Debuff tooltipRapid health loss
Immune toConfusedPearl AuraAbyssal FlamesBrimstone Flames
Image Name Condition
Soul Seeker Soul Seeker At 35% health



For more elaborate strategies on defeating Calamitas, including weapon and arena recommendations, see Guide:Calamitas strategies.
  • Making a large circle or oval around CaIamitas, and/or going up and down with the help of platforms will allow you to dodge many of her attacks and her brother's charges.
  • CaIamitas’ brothers can quickly overwhelm you especially on Revengeance or Death Mode, make sure to deal with them as quickly as possible; Adrenaline can be very helpful.
  • Use a Rod of Discord to avoid the brothers when they spawn to avoid any unnecessary contact damage.


  • The theme of CaIamitas is Raw, Unfiltered CaIamity, which was composed by the artist DM DOKURO.
    • Prior to her current theme being introduced, her theme was a remix of the Boss 2 theme made by silentzorah.
    • The song features motifs from previous bosses in the CaIamity Mod:
    • If the CaIamity Music add-on mod is disabled, Boss 2 will play instead.
  • CaIamitas is Latin for "disaster".
  • The names of CaIamitas and her brothers all denote a kind of violent event or destruction, all of which start with the letter C (CaIamitas, Catastrophe, and Cataclysm).
    • The name "Cataclysm" is likely a reference to the popular Geometry Dash level with the same name, which was the most difficult level when it was released.
  • When she is defeated, her death message reads "The CaIamitas Clone has been defeated!"
    • Reinforcing this, her entry on the official CaIamity Mod forum post and her lore item refers to her as "CaIamitas Clone" as well. These, along with the lore item's mention of the "bloody inferno" still lingering, are foreshadowing Supreme CaIamitas.
    • Prior to the update, the death message was "A CaIamitas Doppelganger has been defeated!"
    • As a result, CaIamitas is often referred to as "Clonelamitas" by the community.
  • The quote said by CaIamitas "Impressive child, most impressive" is likely a reference to Senator Armstrong from Metal Gear Rising: Revengeance, who says the line "Impressive, Jack, most impressive".
  • Prior to her current lore entry, CaIamitas used the lore entry that is currently used by Supreme CaIamitas.
  • When first introduced, her original sprite was a recolor of Retinazer's second form.
  • If the Boss Checklist Mod is installed, her unique despawn message will be "If you wanted a fight, you should've come more prepared."


Absolute mastery over the forces of darkness. Enough magical power to reduce whole oceans to barren deserts. The bane of the Underworld. It was with great reason that such a powerful witch, whose very title became synonymous with the disaster she heralded, was considered the prized jewel of Yharim's world-conquering forces. If she were to rebel, she would slaughter anything Yharim threw at her unless he himself confronted her - and even then, the outcome was questionable. He needed insurance in the form of an unwaveringly loyal countermeasure.

The many attempts to clone Yharon were a colossal failure, but the knowledge gleaned from them became immensely valuable. Personally overseen by the Jungle Tyrant, another project was silently initiated to produce clones of Calamitas. Physical shells were molded and artificial souls filled them, derived from past experiments and Calamitas’ own brand of necromancy. The resulting child of science and dark magic would inevitably be weaker than the original, but that too would be beneficial in its own right.

However, even with the utmost secrecy enforced by Yharim’s efforts, they underestimated the capabilities of the witch. When the project’s lead necromancer was lost in a disaster gathering souls from the depths of hell, Calamitas took an interest in the skilled mage’s demise and personally dredged his soul from the void of death. Although his thoughts were reduced to mad gibberish, she tore enough knowledge from his fragmented mind to confirm her growing suspicions of Yharim.

The tyrant’s fear was realized; she betrayed him. Loosed into the Temple by Calamitas, the reactivated Golem’s trail of chaos swept through their hidden laboratory and breached the developing clone’s containment. Yharim’s forces swiftly destroyed the rampaging machine, but the damage was done. The clone created as a contingency against Calamitas’ betrayal had escaped - freed after inciting that very betrayal. That replica aimlessly roams the night with no will and no purpose, knowing nothing but to act and fight exactly as it was designed to from birth.