I loved this map! It's really amazing! The immersion, the atmosphere, the gameplay. It's all perfect!
My only criticism it's about some not-secret places that you can easily miss if you "follow the rules" when you are playing. I went like this: get the key, go open the door... and when i reached what looked like a "final arena" i thought "wait a minute... i still didn't search the graveyard, the upper level of the mill and under the bridge!" so, i went back and explored these places... i know these places are there to help with the immersion and to reward the player for exploring, but they are really cool places (the graveyard is awesome) and they don't have any importance in the "story" of the map :( i'm talking about simple things like: it would be cool if the "final arena" was closed, and to open it you have to get some rune inside the graveyard, and to open the graveyard you have to go first to the upper level of the mill to get the key or push a lever, something like this :)
But i thing i'm the only one who think like this, since nobody talked about it here :P
I recorded a blind playthrough of the map:
Congratulations for the release. It's really an amazing job =D