I'd be a Legend of Zelda-like boss, except it's endgame, so I have different "stages" that can only be beat by using the various tricks, moves, and gadgets you picked up throughout the game. A melee battle on the floor where you can only hurt me by countering my attacks and hitting after my guard is broken, a wall-climbing version where you use the ranged weapon, a ceiling version where you use the hookshot-type gadget, a big open-space battle on mounts (I'm thinking some kind of raptor-like creature), then I transform into some kind of crazy demon/monster/reincarnate-god and there's section like a DBZ cartoon--where you fly around in the air breaking the laws of physics to smash into each other, followed by a final ground battle *Gaspthatwasalongsentence*. Followed by a kick-ass ending cutscene. So you know, a big-time final exam, where you have to use everything you learned throughout the game to bring me down.