Cooperative Combat is a Vintage Story mod by Rangelost. Cooperative Combat changes creature invulnerability so several players can damage the same NPC at once, making multiplayer fights more responsive.
Why this mod is worth installing
This tweak is useful for multiplayer groups that hunt or defend together and find that teammates’ attacks are often ignored by the same creature.
What Cooperative Combat adds
In the standard combat behavior, a creature becomes invulnerable for half a second after being hit. That brief global window means attacks from other players can be wasted, even when everyone strikes at the right moment.
Cooperative Combat limits this protection to the player who caused the hit. Other players can therefore continue attacking the same non-player creature during that interval, so coordinated combat produces more reliable damage and feels less hostile to multiplayer play.
Where to download Cooperative Combat
The official Vintage Story Mod DB page is the right place to get the current release through the in-game mod manager.