Pirate caverns wasn't something I originally planned, but it will be out with the modifiers update! It's still not finished, mostly lacking sound effects and ambience. It should work in multiplayer, although even right now it's a little buggy.
So how does it work? Face and Undying both wander around floor 1 and 2. You have to collect the silver key, then go back and open the chest with it for the old key, and with the old key, you can open the safe. (yeah, makes no sense, but that's how you beat caverns and get the badge) Face and Undying's AI are pretty much identical, if you get too close for them, and stay around for a bit, they'll kill you, you'll stay laying there and watching others play from where you died, and when everyone dies or the players win, the server will restart just like nights. Simple. This is overall a pretty simple mode, and I'll probably have to buff Face's and Undying's kill timers more. When you're in the kill range, they pause their movement timer, meaning you can't get lucky for them to leave right when you're about to die. Also we used a new undying model for this one, which looks arguably much better. I'm pretty sure Pirate Caverns will break the game a lot, but I'm probably not going to fix much about them since it's not the focus of the game.