What drugs are you on?
While getting a valid, legal registration key is extremely unlikely, it's still possible. Like if someone wanted to sell theirs or something, or if you offered the developers enough cash.
Playing 1vs1 is the easiest thing to do in toribash, seeing as all you have to do is start it up and then go to singleplayer, or multiplayer. The entire game is based around playing 1vs1!
If you want to play a friend, go find an empty server! There's certianly always a few. Only one computer between the two of you? No problem! go to singleplayer, make your move, then click on uke and let them make theirs. It's not like it's overly difficult.
As for toribash dying, no, not happening any time soon with the way things are going currently.