We shouldnīt make the basic horror movie mistake....splitting up. We shouldnīt leave Ragni and Billy behind, lets stick together, lets find out as much as possible from the village if they are human eating mutants and a whole village of them we run back to the boat Heinrich and Billy should be able to give us early warning, if they are degenerate peasants we try to find out as much as possible about the Wittgenstein castle maybe someone knows a secret way in ....If there is no other way in but the direct one we should try to get inside by just walking to the front gate....possibly the Wittgensteins donīt have much personal and just live their days in the dungeons of the ruin.
Or we can get shelter offered from the lord residing in the castle pretending not to know about his outrageous experiments gathering informations once we are inside.