I finished this map yesterday, and it's pretty well made.
Spoiler below!
I liked the idea of the haunted statue being the source of the problems, although I'm still a little unclear about what it exactly is, or how it got there. It could have had another monster or two in there, maybe one roaming around the main room, as there was nothing there to pose a threat. I liked the flashback scene in the tv room, with the Servitor, and then the brute coming down. What I didn't like was that the statue didn't show up enough. He showed up at key points, but there could have been more times. Like when you got the crowbar from the basement, maybe you turn around and he is in the doorway watching you. Overall, it was a pretty well put together custom story, and I liked it.