I couldn't tell if there was a lighting problem or if the art was intentional. Was that a shader or changing LOD's every frame? Whatever it was, it grew on me cuz it worked with the theme and I loved the atmosphere. Was worried what would happen if my flashlight ran out of battery, do you just lose? Also stairs tip, you can use a convex mesh collider, so it just acts as a ramp, super easy to do in unity.