The final DLC for the game is coming real soon now!
In The Dark Ritual you are tasked to stop a group of cultist from summoning The Great Old One. How you can stop them will be different every time, as will be the way you can find out. The focus of this DLC is on Chtulhu-esque mystery. Basically the entire run resolves around one big puzzle that changes every time you play.
We are currently testing the DLC in the Unstable Branch, so if you are curious and want to find out what it will all be about... You can.
Just so you know, it is not entirely finished, yet. We fully expect to do some rebalancing. We need to work on the texts... And we are probably going to reset the high-scores before we release the DLC properly.