The code w/ database caching your using is not setup to parse the Achievments page. However, mine is. Mine is also much more "readable" in coding standards of my own at least. There's no theme files, or anything like that. 2 files, config, and image. Difference in mine is that I use a different php command to do the text, so I don't get that crappy default GD font.
So... if you wanted Quests Completed, you would have to add code parse the achievements page, and then add the SQL to cache it if wanted. Or maybe I'll just post the code later
