Review:
Lighting:Turn up the lighting some more in the setup as there were seems on the walls and killed what was a good scary atmosphere,also the lighting didnt match the light source what i mean by that is the lighting was just off from one of the ceiling lights which made it look like it wasnt the light source.
Level design:Was pretty good but maybe needs some more entities for example some wall pics and hangings(i found a cool wall hanging model pack on the webb if you want it?mostly nazi stuff though).
Music/atmos:The distorted music suited the level and i think that should be left in as it is, you should have turned off the default stock atmos as it can be heared in the background i dont understand why you used a soundzone for the main atmos?
Bug:I see you used the metro pack antique table and as there are no full shaders activated you can see it looks odd and distorted looking.
Bare in mind that i could use <> to change the lighting in which you should use a script to stop it.
Keep working on it cos i did have a fright which doesnt happen to me a lot when i play a horror fps which says you have a talent for scary moments,also work on the lighting a little,the building looks like its been un-used for years yet the electricity still works on nearly every light?try and go for outside light sources shining in or use a flshlight scripted so that the battery doesnt last long and has to recharge?
Like i said keep working on it cos it is scary