AddonFusion

Addon Fusion

Addon Fusion introduces a modular system that enhances items with unique abilities through Addons.

Addons can be found during exploration and attached to compatible items, adding new mechanics, utility, or combat options.

Addon System

• Addons can spawn inside the dungeon (or be purchased, disabled by default).
• They do not replace existing scrap, making them an additional reward layer.
• Each addon is tied to a specific item (unless stated otherwise).
• Some addons can be activated or toggled using the configured addon ability key.

Base Addons

Description

Blade Sharpener (Kitchen Knife)

• Grants a 5% chance to perform a critical hit
• Critical hits instantly kill the target

Echo Scanner (Boombox)

• Toggleable ability (addon key)
• Doubles battery consumption while active
• When active:
• Reveals nearby items through walls while carried
• Reveals nearby enemies through walls while placed on the ground

Flashlight Lens (Flashlights)

• Toggleable ability
• Doubles battery consumption while active
• Allows the flashlight to:
• Blind players when aiming at their eyes
• Stun enemies when aiming at their eyes

Marker Compound (Spray Paint)

• Toggleable ability
• Doubles paint consumption while active
• While active:
• Mark players, enemies, or objects
• Marked targets have their aura revealed through walls

Protective Cord (Shovel)

• Active ability (timing-based)
• Allows the player to block enemies with precise timing
• Is triggered by colliding with an enemy, works with Masked, Forest Giant, and Mouth Dog

Salt Tank (Shotgun)

• Enables the shotgun to damage spirits
• Currently effective against the Ghost Girl
• Hitting a spirit:
• Makes it disappear
• Resets its haunting target

Spectral Frequency (Walkie-Talkie)

• Toggleable ability
• Doubles battery consumption while active
• Allows players to hear dead players through the walkie-talkie

Cross-Mod Addons

Description

These addons are obtained from other mods and integrate directly into Addon Fusion.

Poison Mark (Lantern Keeper)

Description

• Dropped by the Lantern Keeper (attached to the dagger by default)
• Can be transferred to any item

Ability

• Projects a ground marker following the player's aim
• Reactivate to confirm the position
• Applies Poison to targets in the area:
• Deals damage over 10 seconds
• Increases damage taken by 1.5×
• Cooldown: 45 seconds

Frost Mark (Snow Playgrounds)

Description

• Dropped by Frostbite (attached to the Snowgun by default)
• Can be transferred to any item

Ability

• Projects a ground marker following the player's aim
• Reactivate to confirm the position
• Applies Frost to targets in the area:
• Deals damage over 10 seconds
• Strongly slows affected targets
• Cooldown: 45 seconds

Spectral Decoy (The Doctor)

Description

• Dropped by Doctor's Brain (attached to the Doctor's Brain by default)
• Can be transferred to any item

Ability

• Summons a clone that lures nearby enemies, then disappears in a cloud of smoke, dealing minor area damage
• Cooldown: 120 seconds

Ship Upgrade

Description

Addon Capsule

• New ship furniture
• Allows players to extract an addon from an item
• Extracted addons can then be reapplied to another compatible item

Credits

• Evaisa | Creating LethalLib

Attributions

This mod uses third-party assets. Full credit goes to their original creators.

Addon Capsule

• Capsule item (Sketchfab):

More informations

For any feedback/suggestions or questions, you can reach me on the 'Lethal Company Modding' Discord server ( under the same name (username lega2039) or the Addon Fusion thread.

DMs are welcome.