This is a well-done slender game.  The controls for grabbing and using the batteries are a little unintuitive, but they're fine overall.  One of my biggest criticisms is just how dark the map is.  It is pretty much impossible to do anything without the flashlight and the limited amount of batteries pretty much assure that the player will be forced to restart once they run out of a flashlight.  I think that brightening the map a little more could go a long way to improve the user experience.  Also, there is a super jump exploit that lets me go out of bounds really easily.  There's also a hole in the floor that is out of bounds but is visible in the play area.  Overall, this was a job well done and I congratulate everyone involved in the project.