Great cover, for starters.
Wonderfully clean layout with a great typeface.
I love the character names. I know a lot of them are drawn from history, but they work well together to give a picture of the cultures involved.
In a world of fantasy RPGs full of weird and gross stuff, congratulations on coming up with skin magic, which somehow is ickier than a lot of the more overt eeeevil magics seen elsewhere.
I'm not sure I understand the centurion just laying in bed, talking to himself. Likewise, why is only being able to move single-file through the rubble-filled room important?
I like the subtle warnings to not look in Josephina's eyes. It will take a clever player to realize why the painters don't know what her eye color is, but it'll save the characters' lives if they figure it out in time. (Yikes to her gaze power.)
Very creepy adventure and a compelling and horrifying villain. Well done!