Quote Originally Posted by Werhusky View Post
You also need to have em all run once to unlock the roulette. Only roulette where one time completion is not required is Low Level Roulette.
Pretty much what Werhusky said. Even if you completed them before the roulette existed, I believe you have to have finished it once after the release to have unlocked it for the roulette.

...it would be nice if it displayed actual dungeon names instead of a bunch of ???s though.