Unlock Boss Challenge Mode:Unlock and beat both hidden bosses to unlock Boss Challenge Mode. To access it, highlight Arcade Mode, press X Y, then hit START.Unlock Hidden BossesTo unlock the hidden bosses, Ultimate Rugal (Capcom Groove) or Shin Akuma (SNK Groove), beat them during the course of the game. To bring about these boss appearances, complete two of the three criteria:Get over 1500 GPSDefeat Geese or Bison/VegaGet one (or more) Finest KO.Unlock Extra Options:To unlock Extra Options, beat the Boss Challenge Mode without continuing.Unlock Custom Grooves:To unlock custom grooves, beat the Normal Bosses (Akuma or Regal). To make a Normal Boss appear, fulfill two of these four criteria:Get over 1000 GPSGet four or more special KOsGet two or more LV3 super combo KOsSee Middle Boss