I honestly can't see what problems you could possibly have with the game. Yes, Halo 2 is, in my opinion, the BEST out of the Halos. That does not mean that the other games aren't good as well. In my opinion, the best to the worst are as follows: Halo 2>Halo: Reach>Halo: CE> Halo 3. Halo 2 is the best, but they are all great games.