To get the achievement, you have to:
-Beat the game solo
-Collected all 100 elemental fruit
-Collected all 12 elixirs of life
-Collected all alternate costumes and the 4 eyes
I tried getting the ranks for those achievements, but those are ridiculously hard, so I quit trying. And now, my 360 got stolen
(fraternity house)...so I won't be able to get them for a while...