Cool premise, and nice graphics.
A few suggestions for future improvements:
- The player moves very slowly. Both characters seem young and healthy, there doesn't seem to be a thematic reason for this.
- The color of the blood and the color of the floor are very close; a higher contrast would have been helpful.
- I found the constant flickering of the lights a bit annoying, and I don't think it adds that much to the atmosphere. (If you want to convey "the light bulb is dying," then a couple of flickers every 30 seconds or so would be enough.)
- Music would definitely increase the amount of immersion.