A creepy settlement somewhere remote in the German Alps, a terrible influence emanating from a mysterious Institute, a church even the Vatican has abandoned... what more could you ask for in spooky settings?
The backstory is filled with classic elements of the evil Ones Before being awoken by Nazi experiments into the occult and corrupted villagers continuing the work even after the Allies closed the institute and the head researcher was executed... oh, and he's come back to resume his research.
The locals are well-described with plenty of detail to help you bring them to life, the institute itself is also detailed well. Evil monsters, cursed workers and patients at the institute, they are all there, complete with some gorgeous illustrations and full stat blocks.
Yet it is somewhat of a work in progress. You will have to devise your own reasons for the party to visit, and create your own events to lead them to investigate the institute and the horrors within. The tools are here, but you will have to use them to build this into a full scenario ready to run for your players. It feels almost half-complete, and the need for proof-reading (relying on your spell check is not enough!) contributes to this.
A good setting and backstory with some interesting inhabitants, the potential to make a good adventure - once you add some plot to what is provided.