Multiplayerup to 6 players, in the game's own lobbies
How to join The host starts a private game from the main menu, picks a save and presses "Invite" in the lobby; friends accept the Steam invite, or use Join Game on the host in Steam. Everyone playing needs this mashup from Melty.
Play with your friendsSend them the game
About
Trepang2's arsenal, moves and gore, inside R.E.P.O. Press G in a level and you're holding real Trepang2 guns, read from your own Trepang2 install: their models, textures, firing and reload sounds, and Trepang2's own damage, magazine sizes, fire rates, pellets and spread.
What you get
10 Trepang2 guns: MK23 pistol, revolver, SPAS-12 shotgun, SMG, assault rifle, auto rifle, LMG, DMR, grenade launcher, explosive crossbow. Mouse wheel switches, R reloads, right mouse aims.
Trepang2's hands and arms hold every gun, each in that gun's own Trepang2 pose, in Trepang2's dark tactical outfit.
Trepang2 NPCs: the Huntsman, Reaper and Trudge wear Trepang2 bodies (a Merc soldier, a hooded Cultist, a Heavy soldier) with Trepang2's own walk, sprint, melee, stun and death animations. R.E.P.O.'s AI still runs them.
Grab them like in Trepang2 (X): take a Merc or Cultist as a human shield (your shots pass it), kick (F) to execute it, or press X again to shove it away stunned.
Wounds and bleed trails: Trepang2 bullet wounds stick to monsters where you hit them, and wounded monsters drip blood as they move.
Boomer-shooter movement while the guns are out: faster running, endless sprint, higher jumps, Trepang2's power slide (sprint + crouch) and kick (F).
Focus bullet time (C) in solo; in co-op it becomes adrenaline (faster fire, more damage).
Blood and gore from Trepang2: blood bursts, Trepang2's splatter decals on walls and floors, and Trepang2's organs and meat chunks flying when a monster dies.
Kills pay out health, ammo and focus. Reserves restock every level.
Grenades and bolts use R.E.P.O.'s own explosions (blast-jumping works), and bullets still push and break loot, so be careful around the valuables.
Holster with G to grab and haul loot as usual.
Requirements
R.E.P.O. (Melty installs BepInEx for you).
Trepang2 installed on Steam. The first launch reads it (about 30-40 seconds; progress shows at the top of the screen). Without Trepang2 the game tells you so and plays as normal R.E.P.O.
Co-op: up to 6 players, using R.E.P.O.'s own Private/Public game menus. Everyone needs this mashup, and Trepang2 for the guns.
Credits
Trepang2 by Trepang Studios / Team17; R.E.P.O. by semiwork. Unofficial fan mashup. Trepang2 content is read with CUE4Parse (Apache-2.0); other bundled libraries are listed in THIRD-PARTY-NOTICES.txt. Built with AI assistance (Claude).