After searching on several places, i have found the best working aimbot + wallhack for Xbox 360 version of a very popular Call of Duty: Modern Warfare 2 action game.
It has been created by a group of MW2 fans and as far as i know, it is the only aimbot for this game that is really working on Xbox 360 console. It is free to download, just use the link below. You will only need to fill a short form (it takes about 20 seconds) and then you will get your direct download link.
It is completely undetectable, i have been using it until now without being cought. I would highly reccomend you to watch the sample video and read install instructions bellow!