Weapon XP Multiplier

v1.0.2·Updated 2026-07-17

Adds a configurable 0-100x weapon XP multiplier for SULFUR.

About this mod Author’s original text

Weapon XP Multiplier

A BepInEx mod for SULFUR that lets you configure weapon level-up XP from 0x to 100x.

What This Mod Does

This mod adds a configurable multiplier for weapon XP.

Default value:

2.0x

Examples:

XpMultiplier = 0 -> no weapon XP

XpMultiplier = 0.01 -> 1% weapon XP

XpMultiplier = 0.2 -> 20% weapon XP

XpMultiplier = 1 -> vanilla weapon XP

XpMultiplier = 2 -> double weapon XP

XpMultiplier = 10.2 -> 10.2x weapon XP

XpMultiplier = 100 -> 100x weapon XP

What It Affects

This mod patches weapon XP gain through:

PerfectRandom.Sulfur.Core.Weapons.Weapon.AddExperience(float)

It affects non-melee, non-throwable weapons that normally gain weapon XP.

What It Does NOT Affect

This mod does not change:

Player XP

Money

Loot

Enemy stats

Weapon damage

Weapon fire rate

Weapon durability

Melee weapon XP

Throwable weapon XP

Configuration

After launching the game once with the mod installed, a config file will be generated at:

BepInEx/config/kumo.sulfur.weapon_xp_multiplier.cfg

Default config:

[General]

EnableMod = true

XpMultiplier = 2

[Debug]

LogXpChanges = false

EnableMod

EnableMod = true

Set to false to disable the mod without uninstalling it.

XpMultiplier

XpMultiplier = 2

Weapon XP multiplier.

Allowed range:

0 to 100

Decimal values are supported.

Use a period for decimals:

XpMultiplier = 0.2

XpMultiplier = 10.2

Do not use a comma:

XpMultiplier = 0,2

LogXpChanges

LogXpChanges = false

Set this to true only for testing.

For normal gameplay, keep it set to false.

Installation

r2modman

Install the mod through Mod Manager or r2modman.

Make sure the required BepInExPack dependency is installed.

Manual Installation

  • Install BepInExPack for SULFUR.
  • Start the game once so BepInEx creates its folders.
  • Place WeaponXpMultiplier.dll into:

BepInEx/plugins/

  • Start the game.
  • Edit the generated config file if you want a different multiplier.

Compatibility

This mod should be compatible with most mods.

If another mod also changes weapon XP through Weapon.AddExperience, the final XP amount may depend on patch order.

Do not install this together with a fixed Weapon Double XP mod unless you intentionally want the multipliers to stack.

Uninstallation

Remove:

BepInEx/plugins/WeaponXpMultiplier.dll

Optionally remove:

BepInEx/config/kumo.sulfur.weapon_xp_multiplier.cfg

Changelog

1.0.0

  • Initial release.
  • Added configurable weapon XP multiplier.
  • Supports 0x to 100x.
  • Supports decimal multipliers.

SULFUR Config Localization Support

This mod includes localization files for SULFUR Config.

This localization support is only for the in-game configuration page provided by SULFUR Config. It localizes the mod name, config sections, setting names, and setting descriptions shown in the config UI.

It does not change the game’s own text, item names, dialogue, or gameplay content.

Supported SULFUR Config languages:

  • English
  • Simplified Chinese
  • Swedish
  • French
  • Italian
  • German
  • Spanish
  • Portuguese
  • Russian
  • Polish
  • Japanese
  • Korean
  • Turkish
  • Arabic

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
Weapon_XP_Multiplier-1.0.2.zip
File size
57.9 KiB