Good atmosphere, good job actually having a 3D model for the monster and animating it.
I think the game would have been more fun if there was more interesting things to explore on the map, if the game was harder (or the monster harder to find). I was particularly disappointed when I couldn't jump, and when I climbed up the watchtower and wasn't actually able to enter it or find anything cool.
It is however very clear what needs to be done and how, and the gun mechanic works wonderfully.