Acid Gun

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Acid Gun
  • Acid Gun.png
Stack digit 1.png
Damage28 Magic
Knockback1.5 (Extremely Weak)
Mana cost9
Critical chance4%
Use time45 Extremely Slow
Velocity42 effective
TooltipReleases three streams of acid
Inflicts DebuffIrradiatedIrradiated
100% chance

Debuff duration2 seconds
Debuff tooltipYour skin is burning off
RarityRarity Level: 2
Sell 40 Silver Coin.png
Research1 required

The Acid Gun is a craftable Pre-Hardmode magic gun. When used, it fires an even spread of three acid streams that dissipate on collision with tiles or after piercing three times. The acid streams inflict the Irradiated debuff.

Its best modifier is Mythical.



Crafting Station
Iron AnvilIron Anvil
Lead AnvilLead Anvil
Sulphuric ScaleSulphuric Scale10
Acid GunAcid Gun1


  • It is extremely effective on clusters of enemies and on worm-type enemies that have lots of segments like the Eater of Worlds.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Projectiles now grant ID-static immunity frames instead of global immunity frames.
  • Moved Sulphuric Scale below Acidwood in its recipe.
    • Buffed damage from 17 to 28 and acid streams now inflict Irradiated for 2 seconds.
    • Fully exhausting all the pierce of any acid stream will cause all the streams to disappear.
  • Buffed damage from 15 to 17, but nerfed use time from 20 to 45.
    • Nerfed damage from 20 to 15.
    • Resprited.