For me, the choice is obvious. It has to be Opera House. I feel that outside of Temple of Xian, this is the hardest and most confusing level in the game. You're all over the place and there are so many obstacles and enemies that can easily kill you. For a level so early in the game, that's unacceptable. I don't recall the first few levels of the first game being this hard and tricky, so why did the developers decide to get all angry at us like this? I don't dislike this level.......I absolutely HATE it! This level is just too unkind.