I made a horror FPS too, but I used unity's 3D engine. What engine did you use?
first, i was gonna finish it, but i decided to make something else due to time constrains
second, blitz3d, an old framework
its cool but everything should be done in code, you don’t have an editor and its quite restricting in some areas, but it makes it up by offering ease of use and well, you can use limitation to make great games
limitations should not stop you
but, i will say this, best luck for you :]