Why horror?

[Your Computer]

That is cool, I really want to see it. Is it all custom models?

No, that would be far more work than intended.

Anyway here is what I was talking about, look how the ground is mostly flat.

http://www.youtube.com/watch?v=sQoNZNe1W...re=related

The game in amnesia is already made. You just need some ground and a skybox and you are good to go. A bunch of walls and custom models...I would love to see it

With HPL2 you could do the rolling barrels, have platforms appear out of nowhere after an event, do minor boss battles, but entity-to-player collision detection (i.e. "picking up" items as you run over them, getting hurt by rolling objects, et cetera) is not actually possible. Sure, you can have areas placed on top of each and every item and check to see if the player entered the area, and have areas placed in the path of the rolling objects and see if both the player and the object are in the area at the same time, but that is impractical.