Wonderful audio work.
This would make an incredible piece for a scary film. If by "demo" and "remove in a few days" you mean, "replace with the full version"...I'm all for it.
Nothing negative to say here. The audio is clean and great quality. Great composition.
You should keep going......
......it sounds good, you should finish this!
Please contact me if you would like to use this in a project. We can discuss the details.