I like the addition. Anyway , the first iteration needed to be put out there and tested for any weaknesses. As Matt said it looks very open ended and scalable.
The achievements window is nice , window is agile (opens quickly, no drain) and easy to navigate. Very good effort.
I give the feature a +1. I found it to be highly entertaining.
I want to see just how fast I achieve "death becomes me "
It would be funny to see things like "<insert race here> squasher" in the future and the ability to have these titles over you head.
Edit : we need an icon for it. The "K" designation is just a little too hidden.