After defeating Skullman and taking the Skull Barrier (AKA The Hell Wheel), we now go against the gimmicks found in Pharaohman's Stage, face an old foe found in a previous Megaman game and visit Dustman as we continue our trek into Minus Infinity.
Now as far as difficulty goes in this game, well... Let me put it to you this way, this is still a challenging game, but thanks to the Rush Seach ability (A chargable form of Eddie Fliptop... but with Rush), this is in no way a difficult game to beat.