I didn't like Halo that much and I still don't understand why it was so highly praised. Character design was graphically good, environments were mediocre. Two things bad about characters: 1. They were not believable (the screaming little wackos for example) and 2. they were not believable (why the hell would all the aliens in far space have 2 eyes, 1 head, 2 feet, 2 arms etc.). Then there was the simplicity of the game. Why go and kill everyone in the way with conventional weapons and not use nuke?