This is kind of a crazy story about someone lost in darkness who becomes possessed by the very thing that he is battling. And I dont know if I am correct in assuming this, but I believe the goat sound is an obvious reference to general evil and darkness, the Goat is one of many creatures used in allegories to describe evils.
The animation in this isnt bad at all. I feel that the lighting effects maybe could have been a little better. The light doesnt effect the environment and you should see it reflecting off of the walls since it is a cave. But I dont animate, so who am I to tell you how to do it, lol.
Good work on this though. 4/5