Getting Started with Lethal Company Modding

Lethal Company modding uses r2modman + BepInEx + Thunderstore — the same stack as Valheim and Risk of Rain 2. The flow is identical; only the catalogue differs. This guide is the LC-specific walkthrough.

Step 1 — Install r2modman

r2modman supports Lethal Company. Set LC as your target on first launch.

Step 2 — BepInEx auto-installs

r2modman handles BepInEx setup. Accept the prompt on first profile creation.

Step 3 — Install mods

In r2modman's Online tab, browse the Lethal Company catalogue. Three popular first picks:

More Suits — adds dozens of additional suit colours/cosmetics. Cosmetic, low-stakes first install.
LC API or CoroutinerLib — common library mods other mods depend on.
Mimics — adds AI-controlled "mimic" player imposters as enemies.

Click Download on each. r2modman resolves dependencies.

Step 4 — Launch via r2modman

Start modded in r2modman. LC launches with the active mod set.

Step 5 — Coordinate multiplayer

LC's co-op (4 players) requires identical mod sets across all clients:

Host saves their profile in r2modman, exports as a code.
Shares code via Discord/whatever.
Friends import the code.
Everyone launches the same profile.

Mismatched mods produce immediate disconnects or worse, mid-game desyncs.

Common gotchas

r2modman says BepInEx outdated. Re-run BepInEx install through r2modman.
Patch broke mods. Wait for updates. Most popular mods catch up within days.
Multiplayer crashes. Mod-set mismatch. Sync profiles.
Mod added monster that hosts can't see. Some monster-additive mods need host-side install plus client-side install for visibility.

If you've modded any Thunderstore-aware game, you've already learned the patterns. The skill transfers directly.