what happens when I collect all achievements?

Well maybe chess.com should consider giving a free premium membership, since to collect all achievements surely is not an easy task, or at least it cannot be achieved in a short period of time.

You gain access to the second, deeper layer of this site ...
you really believe Erik got so rich from hosting Chess games?? Lol, how gullible you are!

I recently got the achievement of being a member for 10 years.
With achievements like that, yeah it cannot be achieved in a short time. And not many people are able to achieve 60+ in puzzle rush.
I'm pretty sure no one has collected all achievement and probably no one ever will (unless they change them).