Lol, all I had done there was trying the blood on it for maybe another a ritual.
I'm through now: I had posted before that I liked the unique setting. Now I would add...
Spoiler below!
...that the last brute breaking through the wall and hunting for you in the pig storage was just a great idea! On my first try I had gone too far into the direction when he broke through the wall and thought: Relax, he must be an illusion if he spawns that close. Well, he wasn't obviously.
While my second problem with the "invisible" door was stupid, I really think there could be a little hint on what to do to purify the water - or did I just not find it? Anyways, it appeared a bit like trial and error to find a place the water.
Everything else was really great in my opinion, the looks and lightning of the maps, the scary moments, custom items for the inventory.
This doesn't have to do with the map itself, but I liked the line in the end, saying that the preview was over and to comment on the story on the forum. This eliminates worries not to have reached the real end and might encourage people to join here!