Mastering would mean that you could do whatever you wished to do in the game. It's as if I wanted to make a 9 DM boomhit, and I knew how to do it right away.
I don't think anybody is ever going to be that good at Toribash. It's not about mastering the game, it's about skillful use of what you already know. I think Dafe did the best job out of the little general knowledge there was of the game back then, and Jaker is doing pretty well right now when it comes to technical understanding of the physics.