This custom story came about while I was working on my other custom story (which is discontinued). This is the first chapter of hopefully many.
This looks like some sort of beta version. Flickering, overlapping textures, overlapping of models through the walls, and, mostly noticeably, black void visible from inside the map.
I wasn't able to open the hatch under the carpet, it looked like it was locked. But in video walkthroughs, they did it without any sort of key. I was able to remove the hatch in the map editor but it didn't reflect in my saved game and I didn't want to start my game again from the beginning. FAIL!
And I had two lanterns.
I must rate this very low because you didn't even test this map before releasing and so there are gamebreaking bugs. I wasn't able to finish it. And I only played the first chapter!