There is no HUD, so the player must rely entirely on visual cues to determine Turner's current state of health; most notably the character's posture, visible injuries on his body, darkness and blurred vision. The player must also keep note of various environmental factors such as sounds, the direction of the wind and the presence of blood on their weapons; since wolf enemies have a strong sense of smell, are less approachable from downwind, and can also smell blood from both open wounds and soiled weaponry. Similarly, rabbits have great hearing and are sensitive to noises generated by rustled bushes.