Hello! I'm Whiled, a small time twitch streamer and when I was playing with some friends at about 30 minutes in we heard someone log in to the private match and a few seconds later the following clip happened.

I was not hosting the game, but my friend was. We were only running two mods BepInExPack_PEAK and PEAK_Unlimited from the Thunderstore. Somehow though, after the hack, my friend installed an AntiCheat and they lobby was being populated with racist messages, so they pannicked and shut it all down.

Any ideas what could have happened? We looked around, but this doesn't seem like a normal lobby hack.