There are many guides around the internet but i found this one on Xbox360Acievements.org easiest to use as they have the items colourcoded too.
Here is the link:
http://www.xbox360achievements.org/forum/showthread.php?t=23...I do not take responsibility or credit for this guide, The user Tyger7 on xbox360achievements.org is the one who made the guide and full credit should go to them.