We mentioned Visual Studio Achievements for Windows Phone just over a month ago. The pet project by developer Den Delimarsky picks up where Microsoft's Channel 9 left off. In short, these are achievements...but for developers! And now you can track them easily on your Windows Phone, thanks to Den's app.
Having said that, the app itself is pretty awesome with the ability to track your achievements as well as sharing and comparing your scores to others for ultimate bragging rights.
Grab the free app here and now in the Marketplace.