I played solo, so note that.
Monster never attacked me, he was just walking around.
If player whistles while standing on stairs, monster will hit the stairs and stuck.
Foot step noises can be heard even when monster is stopped with 3rd ability.
I would say that old map was better, because new one is too big, but again I played solo maybe with actual player I'll be different. However new maps design with bright green maze is not very scary.