shooting them is the point. Getting lost in the dark is also the point. I guess this game isn't exactly fun :)
I gave it another try and I managed to find the puzzle this time and understand how the switches work. But in the end, I failed to figure it out and I didn't have the patience to walk back again and again to the switches. Nevertheless, the mechanic of only being able to see in flashes of light is interesting and full of potential, and the audio ambiance combined with the ever present threat of a mob mauling you from the dark kept me on my toes.