I killed some cross monsters and got past the curtain.  I love the eerie feeling you captured with the darkness and environment. The first monster was actually pretty scary and a threat, but I found the next few encounters a bit easier as you can back up and turn down a hall and they will just go forward and disappear into the walls. The stone environment would greatly benefit from a simple ambient song that gives a scary feeling. I'm curious to what comes next. What are your plans to add next?