Adds a inside enemy called the Sentinel, a giant robot that patrols halls and has guns. it can dance to boomboxes, and other cool stuff too! semi-passive but has a temper and will kill you.
Install BepInEx
Put all the files in the zip file folder thing, into this path in your game: Lethal Company\BepInEx\plugins\SentinelMod, it should contain many files within the folder of that path.
Run the game and Done!
Alternate : Use a automatic mod launcher thingy