Where Are My Steenkin' Badges, Kos?

Part of your profile is a display of badge icons, which seem not to be explained in any organized way in the FAQ or Knowledge Base, or anywhere else that I can find. So here you go, to the extent that I have been able to discern by observation and diligent searching.

The badges that I have found are shown above. Below, I give you the name of each, what it does for you, if anything, and how to get one (except Beta Tester, which I hope some commenter will explain).

I have posted this in both DK4 and DK5 formats on their respective sites, and I am adding it to the draft DKOS5 Click by Click Reference Manual that I have started work on. I will announce its location on the Web and invite others to collaborate on writing it soon.