 While each difficulty alters the strength of the enemies, some also change other elements of the game such as removing environmental hazards in Beginner mode, an altered game script in Happy mode (Japanese version only) and only allowing damaging of enemies through critical hits in Crazy mode.In addition to headwear that gives characters various abilities and protection there is also a number of outfits that can be equipped.Matching the right outfit with the right hat could unlock additional abilities.