Grenade Launcher
Adds a fully configurable alternate Grenade Launcher for all three ULTRAKILL Rocket Launcher variants.
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About this mod Author’s original text
Grenade Launcher
Detailed weapon documentation is available in the Wiki tab mod page.
Grenade Launcher is a BepInEx 5 mod for ULTRAKILL by DocValentyne. It adds a terminal-selectable alternate form for all three Rocket Launcher variants, with new primary and alternate fires.
The primary fire uses an arcing grenade inspired by the Team Fortress 2 Demoman's stock Grenade Launcher. Its behavior and balance can be extensively customized through Plugin Configurator.
Installation
Install Grenade Launcher through r2modman or Mod Manager. BepInEx and Plugin Configurator are installed automatically as dependencies.
For a manual installation, install BepInEx 5 and Plugin Configurator, then place GrenadeLauncher.dll in ULTRAKILL/BepInEx/plugins/DocValentyne-GrenadeLauncher.
Usage
Open ULTRAKILL's weapon terminal and select the alternate form for any Rocket Launcher variant. Standard and alternate Rocket Launchers can be mixed in the same loadout.
Configuration is available under Options -> Plugin Configurator -> Grenade Launcher.
Compatibility API
Grenade Launcher 2.0.2 adds a per-weapon integration API for other mods. External mods can opt one exact RocketLauncher instance into Grenade Launcher primary-fire behavior (or force it to stay native), hand secondary-fire ownership back to the external mod, provide a per-instance custom-model paint palette, drive the custom cooldown dial/AltFire animation, and select grenade projectile appearances per-primary or per-shot. This does not change the player's terminal selection for other Rocket Launchers of the same variation.
Leaderboards
While the mod is loaded, Cyber Grind scores are kept in your local save but are not submitted to the public Steam leaderboard.
Building
Copy Directory.Build.props.example to Directory.Build.props, update the two local paths, then run:
dotnet build -c Release
You can instead pass the GameDir and BepInExDir MSBuild properties directly. Do not redistribute ULTRAKILL, BepInEx, or Plugin Configurator assemblies with the source.
License
Grenade Launcher is released under the MIT License.
Install & use Install: BepInEx plugin
- The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
- Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
- Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
- Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.
Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.
Install these first, or the mod will not work: