Looks like the only one remaining (except for donation) is to have 2000 games played. And by the way congratulations on getting all wands and rings identified.

Thanks man! I have 500 Game Played badge, shouldn't he 2000 Games badge just stack onto the 500 once I get it?

Yep, it stacks. Check out the badges to see which one you are missing.

I already checked 15 times. I'm left to assume there is a blank space in the badges screen after I get 2000 games

Yes, there's an extra space. I also checked it a couple times.