History:Acid Rain

Main article: Acid Rain

• 2.0.1.002: Updated Boss Checklist portraits for tiers 1 and 3.

• 2.0.1.001:
  • Now plays the "Thunderstorm" music track instead of the "Solar Eclipse" music track if the Calamity Music Mod is not installed.
  • Fixed Tier 3 being displayed at the incorrect point in progression on the Boss Checklist mod.

• 1.5.1.001:
  • Increased tier 1 kill requirement from 90 to 110, tier 2 kill requirement from 115 to 135, and tier 3 kill requirement from 140 to 170.
  • Decreased time required without killing enemies to end the event from 4 minutes to 2.5.

• 1.4.5.002: Fixed a bug that would end the event prematurely while enemies were being fought due to natural rain ending.

• 1.4.5.001:
  • Can now occur if the player defeats Aquatic Scourge before defeating Eye of Cthulhu or Wall of Flesh.
  • Reduced the enemy kill count requirements for tiers 2 and 3.
  • If no Acid Rain enemies are killed for 4 minutes while the event is ongoing, the event will stop.

• 1.4.4.002:
  • Tier 2 is now forced 10 seconds after defeating Aquatic Scourge.
  • Reduced the amount of kills to clear the first two tiers from 180 kills to 90 in Tier 1 and 125 in Tier 2.

• 1.4.4.001: Introduced.