Creating a 3D game in the short time given in a GameJam is hard, but I'm amazed how you managed to not only finish it with this high graphics quality, but also cool gameplay that matches the theme, nice A.I., even atmosphere and cool music to give players a better feel of the situation, and also some little, but important features like settings for different screen resolution (Nearly no submission has this feature at all)
Obviously, in just 60 hours, a game like this isn't perfectly polished yet, but I'm sure it will be really good after some more work ^^
As HilmBarney has already said everything to bugs, ideas for changes etc, I'll just say: Great job on this game!