A half star for the neat graphics and some mildly impressive ambient sound design, with some funny voice lines, bird noises and the such: I like that.
But in totality, I would not even call Deer Hunter on the GBC a game, because it hardly has a gameplay loop. You have experienced the full scope of the game once you kill a single deer. I am not joking. All customization is pointless, the different levels are just a difficulty select. There is one way to kill deer. There are no rewards for killing deer. Just kill deer. Spoilers: You do it by aiming the gun and pressing the A button after you rub a tree long enough for a deer to walk over to your general vicinity.