BossSouls

v1.0.0·Updated 2026-05-12

Boss Souls system for Lootun. Collect souls from defeated bosses and equip them for powerful passive effects.

About this mod Author’s original text

Boss Souls

A comprehensive boss soul system for Lootun. Defeat bosses to collect their souls, then equip them for powerful passive and proc effects.

Features

  • 76 unique boss souls — each boss drops a soul with unique mechanics
  • Tiered soul system — souls organized by boss difficulty tier
  • Primary + Secondary slots — equip one primary soul for its proc effect, plus secondaries for stat bonuses
  • Soul Altar building — upgrade your altar to unlock more slots and features
  • Mastery system — repeated kills power up equipped souls
  • Forge system — collect enough kills to permanently forge a soul
  • Full UI — soul selection panel, equip slots, build card integration

Soul Effect Categories

  • Offensive procs — bonus hits, chains, AoE explosions, overkill cascades
  • Defensive — death saves, barriers, damage reduction, reflect
  • Buff/debuff — attack speed cycles, elemental convergence, vulnerability stacking
  • Utility — flask charge savings, gold bonuses, mission speed

Installation (Manual)

  • Click Manual Download at the top of the page
  • Extract the files from the.zip
  • Navigate to your BepInEx directory: Steam/steamapps/common/Lootun/BepInEx/plugins/
  • Copy BossSouls.dll from the extracted BepInEx/plugins/ folder into your plugins folder

Installation (Mod Manager)

  • Download and install Mod Manager or r2modman
  • Click Install with Mod Manager on this page
  • Run the game via the mod manager

Configuration

After first run, edit BepInEx/config/com.corga.bosssouls.cfg:

  • EnableDebugLogging — verbose logging for testing soul effects

Compatibility

  • Requires BepInEx 5.x
  • Compatible with other Lootun mods

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
  3. For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
  4. Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.

Install locations vary a lot between mods — the bundled readme is the most reliable guide.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPack

File & checksum

Filename
BossSouls-1.0.0.zip
File size
599.1 KiB