Fargo's Mod/Bloodthirsty

Bloodthirsty is a exclusive debuff inflicted by certain enemies. It massively boosts both the spawn rate and the max amount of enemy spawns.

The player can become immune to Bloodthirsty by equipping the or its upgrades.

Trivia

 * Despite drop, Brain of Cthulhu is only Eternity Mode boss that doesn't inflict with specific debuff as  on immunity.