 Many reviews also noted the game 's high difficulty . Both Giancarlo <unk> of GameSpot and Craig Harris of IGN found that the game 's bosses have very unpredictable attack patterns , thus making the battles extremely challenging . Harris additionally observed a heavy amount of trial @-@ and @-@ error for the levels themselves where the player must die several times before completing each one . He concluded , " [ ... ] It 's really the way Mega Man games have always been ... and to be honest , with all of the annoying little deaths in the game , there 's always that sensation after every failure that you 've learned the challenge , and <unk> definitely prevails in this game " . 
