Turn Kain and Paukan into autonomous boss encounters with phased combat, destructible systems, reactor weak points and a jumping ground slam.

Give your players a target that demands more than standing still and holding the trigger. Mech Boss brings autonomous Kain and Paukan encounters to your FiveM server: moving gunfire, escalating combat phases and a close-range ground slam that forces players to reposition.

Features

• Autonomous encounters. An administrator chooses the mech and arena, then starts the fight. The panel spawns the boss; no player or NPC pilot is required.
• Three combat phases. The boss changes its weapon profile and presentation as its hull weakens. It moves around its target while aiming and firing, with warning and recovery windows between attacks.
• Jumping ground slam. Approach during the cannon phase and the boss can interrupt its attack, telegraph a danger circle, jump and strike the ground with its body. Area damage falls off toward the edge and respects armor.
• Component-based counterplay. Damage weapon systems to disable firing mounts, impair sensors to reduce accuracy, or damage the drive to slow movement. Multiple system failures expose the rear reactor for a stronger attack opportunity.
• A visible final phase. Steam, smoke, electrical sparks and pulsing reactor light intensify with the encounter. A critical-phase ground halo makes the boss stand out, while a separate warning marks the actual slam area.
• GTA vehicle weapon profiles. Use configurable stock vehicle machine guns and cannons through the shared mech weapon system, including matching weapon audio. Phase weapons and close-range fallback can be configured.
• Administrator control. Start and stop encounters from the F9 terminal or /mechboss. Server-side permissions control access; arena and routing-bucket rules define who participates.
• Integration-ready. Server exports and lifecycle events let trusted resources start encounters, read status and react to a confirmed boss defeat. Connect your own mission or reward system through the public API.

Made for your server

Built for staff-run server events, faction challenges, industrial exclusion zones and custom PvE missions.

Getting started

Open F9 → choose Kain or Paukan → set the arena radius → start the encounter. The boss spawns ahead of the administrator. Use an open area with room to move and dodge.

Included

• Administrator encounter terminal and player boss HUD.
• Configurable phase weapons, combat timing, arena settings, damage profile and visual presentation.
• English by default, with Russian and Chinese translations.
• Public integration API, Lua examples and English documentation.

Requirements

• FiveM with OneSync enabled.
• ox_lib and the compatible KHANStudio Mech Core resource (1.15.0 or newer compatible release).
• At least one compatible KHANStudio Kain or Paukan mech resource (2.15.0 or newer compatible release); xsound for the mech audio dependency.
• This is an encounter add-on for the KHANStudio mech system. Install the required base mech resources before using it. Mech Patrol is optional.

Customization and integrations

Configuration, public API bridges, type definitions, documentation and NUI files are declared open through escrow_ignore. Internal encounter and combat controllers remain protected. Built-in economy payouts, loot tables and inventory rewards are not bundled; those are integrations for your own server.