This achievement is some what difficult to track your progress on, since it require that you track your progress on several tasks in different parts of the game.
In order to help you keep track of which accomplishments you have completed - and more importantly your progress on the ones that require some serious grinding - I have created this Google spread sheet containing tracking of ALL the accomplishments, with visual formatting to help you quickly see what you need to complete.
The sheet is created so you can share it with up to four other friends, since some of the accomplishments are easier to complete with a little collaboration.
It has been awesome for me and my friends, and helped us focus on the tasks we were missing.
Please see the sheet 'How to use' for instructions on how to use the document and how to create your own copy.
I hope you find it as helpful as I did, and let me know if you think I should change anything.
Here's an example with filled in progress (actually a copy of the sheet I used until yesterday):https://docs.google.com/spreadsheet/ccc?key=0AtKH7yzOMFlUdDB...
Happy slaying!.... :)