30XX is a marked improvement over its predecessor.  Beyond the permadeath Standard Mode, you can check out Mega Mode if you'd rather choose your level order and can also create and upload your own levels or chunks of levels.  The ability to play as either Nina or Ace and can switch between runs in Standard mode, or play co-op, means you can choose whoever better suits your playstyle.  Make no mistake though - even if you're a fan of Mega Man (specifically Mega Man X) you'll still find plenty of challenges as you make your way through, but for it's a challenge I definitely recommend checking out.