This game is very deep. This game is probably creating a visual picture of what happens in life. Like how your mind, body and soul must be at atonement and harmony with eachother to be "complete". Kathyrn could be a symbol for friends, family and loved ones. Though they mean everything to you, you still have to move on and take it to the end. The green and red barriers could symbolize the barriers that we face in real life. Some things can't be solve with brute strength, pure knowledge or faith in someone.